Shāng Bù Huàn enters the Xiān Zhèn Fortress to meet Bó Yáng Hóu to surrender the Sorcerous Sword Index and place it under the fortress's protection. Despite the letter of introduction by the Seal Guardian Dān Fěi, Bó Yáng Hóu was suspicious of Bù Huàn's intentions, but accepts the Index, nonetheless. Bù Huàn reunites with his old partner, Làng Wū Yáo and his talking Pipa Líng Yá, who informs Shāng that Huò Shì Míng Huáng has sent the assassin Xiē Yīng Luò to retrieve the Index. Bù Huàn hurriedly returns to the fortress as it falls under attack by Yīng Luò.

Lǐn Xuě Yā & Xiào Kuáng Juàn visit the Xiān Zhèn Fortress to speak with Bó Yáng Hóu, who is recovering from the poison applied to him by Xiē Yīng Luò. Both Xuě Yā and Kuáng Juàn use the information to further incriminate Shāng Bù Huàn, citing he and Xiē are conspiring to steal the magical weapons from the fortress.

Bù Huàn and Wū Yáo flee from Yīng Luò, just before Xiào Kuáng Juàn enters the scene. Yīng Luò too, is forced to flee when Kuáng Juàn and his men show no remorse in killing the puppets. After finding a safe area, Bù Huàn tells Wū Yáo that the Seven Blasphemous Deaths was the second sword Yīng Luò has stolen. Neither Bù Huàn nor Wū Yáo can remove the poison from the former until Lǐn Xuě Yā arrives to meet them.

Xuě Yā and Wū Yáo proceed into Hellfire Valley, the domain of the dragon Mò Wáng, for the latter's horn needed for the antidote. The duo successfully defeats the dragon and obtain the horn, but Wū Yáo attacks Xuě Yā shortly after, citing Lǐn as an untrusting individual. Xuě Yā escapes and gives Wū Yáo the final instructions on preparing the antidote.

Xiào Kuáng Juàn betrays Xiē Yīng Luò by taking the Night of Mourning for himself after she is defeated by the rejuvenated Shāng Bù Huàn, forcing her to flee. Lǐn Xuě Yā arrives and convinces Kuáng Juàn to retreat as well.

Bù Huàn is badly wounded by Yīng Luò, but was ordered by the Seven Blasphemous Deaths to not kill him, instead make him suffer by killing more innocent victims by her blade. Yīng Luò leaves while Xuě Yā takes an exhausted Kuáng Juàn, unaware that the latter has discovered the former's true identity.

The Seven Blasphemous Deaths lambasts Yīng Luò for failing to defeat Wū Yáo, and orders her to offer her blood to the sword as punishment. Frustrated, Yīng Luò frees herself from the sword and leaves. As she wanders, she encounters Shāng Bù Huàn and the two engage in a duel, with Bù Huàn victorious. Bù Huàn spares her and tells her that one can also gain strength through defeat before leaving. Learning of this, Yīng Luò gains her resolve and is about to start a new outlook in life when she finds Dì Kōng, now using his given name Lóu Zhèn Jiè, as the new wielder of the Seven Blasphemous Deaths, and becomes his first victim.

Bù Huàn meets up with Wū Yáo, who just finished making a grave for Yīng Luò. Bù Huàn is chastised for his compassion for others, which led to everything that is going on so far, before Wū Yáo sets off to face Lóu Zhèn Jiè alone.

Xuě Yā sabotages Kuáng Juàn's smuggling operation by switching the swords to be sold instead at their country of origin, revealing them as stolen goods to buyers and pinning Xiào as the culprit. In panic, Kuáng Juàn attacks the buyers and the local lawmen as he flees.

Bù Huàn asks his friend Juǎn Cán Yún to hold onto the Sorcerous Sword Index while he goes after the released swords and their wielders. Kuáng Juàn confronts Xuě Yā over the botched operation and Xuě Yā denies his involvement. Rather than be enraged over the incident, Kuáng Juàn sees it as a relief and abandons the entire operation, opting instead to make a fresh start by creating his own army using the Night of Mourning. Disgusted by Kuáng Juàn's reaction, Xuě Yā leaves him.

Lóu Zhèn Jiè ends up in the Wasteland of Spirits and reveals to the Seven Blasphemous Deaths that he was never under the sword's control, wielding it instead of his own free will because he is enamored by its beauty. He intends to die in the wastelands to ensure no one else wields the sword, much to the latter's objections. Mò Wáng appears and attacks Lóu Zhèn Jiè.

Làng Wū Yáo finds Xiào Kuáng Juàn in a marketplace and the two engage in a battle. Kuáng Juàn tricks Wū Yáo to wield the Night of Mourning, allowing the former to attack and kill the civilians that were turned into puppets, with the latter unable to protect them and leaving himself open to Kuáng Juàn's attacks. Shāng Bù Huàn arrives and takes the Night of Mourning and uses it to command the puppets to attack Kuáng Juàn. Kuáng Juàn is shocked by Bù Huàn's ability to command as he is badly beaten by the puppets and flees.

Bù Huàn, Xuě Yā, and Wū Yáo find a hanged Kuáng Juàn with a note, indicating he was killed by Zhèn Jiè, who challenges Bù Huàn to a duel. Bù Huàn accepts and meets Zhèn Jiè in the Demon Spine Mountains where they begin their battle. To avoid being charmed by the Seven Blasphemous Deaths, Bù Huàn allows himself to be turned into a puppet by the Night of Mourning, with Xuě Yā as its wielder. Zhèn Jiè is overwhelmed and asks the sword for its help, but the latter is conflicted in either helping Zhèn Jiè and be its last wielder or allowing Bù Huàn to win and have it trapped in the Index once again. The sword tells Zhèn Jiè to attack Xuě Yā, but realized too late. The Night of Mourning was an illusion set up by Xuě Yā and the real one was now in the hands of Wū Yáo. Wū Yáo restores Bù Huàn and the trio separates Zhèn Jiè from the Seven Blasphemous Deaths. Bù Huàn begins to seal the sword, but Zhèn Jiè reaches out and grabs it, creating a shockwave that cuts off his arm and sending him into the deep abyss, falling to his death with the sword in hand.

Lóu Zhèn Jiè, having survived his battle with Bù Huàn, wanders within the Void Junction and is separated from the Seven Blasphemous Deaths when he touched a Scrying Mirror. He is then teleported to a world occupied by Guǐ Duó Tiān Gōng, a wizard from Xī Yōu. Upon learning the circumstances of Zhèn Jiè's arrival, the wizard proposes building a prosthetic arm for Zhèn Jiè in exchange of helping him re-open the portal back to Zhèn Jiè's point of origin.

In a flashback, Bù Huàn, Wū Yáo, and Tiān Mìng battle against Huò Shì Míng Huáng. The trio are forced to flee as Míng Huáng is too powerful and permanently blinds Tiān Mìng. In the present, Bù Huàn explains that he left Xī Yōu because he would not further risk the lives of his comrades for the safety of the Sorcerous Sword Index, and until the Index is safely secured, he could not visit Tiān Mìng. Bù Huàn's party then wait for the Scrying Mirror to take them back to the Void Junction and resume their search for the Seven Blasphemous Deaths.

Xuě Yā overhears Xíng Hài's plan to use the Void Junction to travel back in time to restore Zhào Jūn Lín's demonic form and informs Bù Huàn, whose party just arrived into the Void Junction. Seeing no surprise reaction, Xuě Yā deduces Bù Huàn has used the Scrying Mirror to travel through time before. Wū Yáo rebukes Bù Huàn for not sharing this knowledge and use it to go back to the past and save Tiān Mìng. Xuě Yā uses a Scrying Mirror to forcibly teleport Bù Huàn and Wū Yáo away just as Yì Piāomiǎo arrives, while Cán Yún goes into hiding. Xuě Yā convinces Piāomiǎo that his conversation with Bù Huàn is part of a deceitful plot against him.

Lóu Zhèn Jiè and Wā̀n Jūn Pò arrive at the Void Junction and, upon seeing Lǐn Xuě Yā, Zhèn Jiè attacks him. Jūn Pò intervenes explaining that Xuě Yā is on their side. Azibělpher agrees to aid the sisters and begins the process of powering the Void Junction for time travel. Xíng Hài reports of Zhèn Jiè's arrival to Zhào Jūn Lín. The latter warns that Zhèn Jiè is dangerous and must be dealt with caution, and is angered when Xíng Hài assumes that her sister's weakened state was due to her using almost all of her magic to save Zhèn Jiè from death.

Jūn Pò's soldiers question allying with the Order of The Divine Swarm. But Xuě Yā, disguised as a Xī Yōu soldier, convinces them that it is for the good of their mission. Xuě Yā then notifies Jūn Pò of Xíng Hài's plans, prompting Jūn Pò to report it to Huò Shì Míng Huáng. Míng Huáng instructs Jūn Pò to allow Zhào Jūn Lín to be resurrected, to be used as bait to lure out Shāng Bù Huàn and ambush him to take the Sorcerous Sword Index.

Jūn Pò informs Piāomiǎo of Huò Shì Míng Huáng's plan and laments his helplessness. Piāomiǎo tests Jūn Pò's loyalty by suggesting he ignore his master's orders to which Jūn Pò refuses.

Meanwhile Bù Huàn and Wū Yáo barges into Xíng Hài's chamber just as she finished empowering a scrying mirror with time travelling powers. Wū Yáo is able to get ahold of the mirror but runs off instead of destroying it, still believing he can use it to save Tiān Mìng. As he makes his escape he is joined by Cán Yún, with Bù Huàn and Xíng Hài following behind. The group makes their way into the chamber with Jūn Pò and Piāomiǎo and a fight breaks out. During the skirmish the scrying mirror is shattered into two. Bù Huàn's group manages to escape with one half, while Xíng Hài retrieves the other.

Xíng Hài summons Xuě Yā to interrogate him about his involvement with what transpired, and tricks him into looking at the Seven Blasphemous Deaths. He is overpowered by Xíng Hài and succumbs to the sword's charms, becoming its new wielder.

Bù Huàn finds himself 200 years in the past during the War of the Fading Dusk and meets Bái Lián. Bái Lián explains he is from a different realm and was transported to this current location through unknown means. Seeing his swords have somehow gained magical powers, he gave the weapons to the humans to fight the demons, and eventually started forging more. Sensing Bù Huàn is from the future, he wonders if he is here to inform him on the fate of the weapons. Upon seeing the Sorcerous Sword Index, he realizes the destruction they have caused, and offers to take the scroll from him. Bù Huàn turns him down, relieved the source of the weapons isn't a divine being, and is happy to continue protecting the swords.

Azibělpher tries to coax Wū Yáo into interfering with Huò Shì Míng Huáng and saving Tiān Mìng. He explains the consequence would be Yāo Tú Lí rampaging through Dōng Li, as the event that triggered Bù Huàn crossing the Wasteland of Spirits would not occur. Wū Yáo ultimately chooses to let the events play out, much to Azibělpher's amusement. He then takes him further back in time.

Xuě Yā kills Cán Yún using the Seven Blasphemous Deaths while Xíng Hài subdues Bù Huàn. Piāomiǎo snatches up the Index and bargains with Xíng Hài for Bù Huàn's survival in exchange for some of the swords. The two are unable to come to an agreement and Piāomiǎo hands Jūn Pò the Index while he contacts his master. He unsuccessfully attempts to usurp Jūn Pò, and Huò Shì Míng Huáng orders him to watch the general in case he does plan a betrayal.

With Xuě Yā and Bù Huàn captured, Xíng Hài plots to lure Dān Fěi to the Void Junction and have a reanimated Cán Yún kill her. Zhèn Jiè overhears the two talking and is reunited with the Seven Blasphemous Deaths, much to her dismay. Allying himself with the demonic sisters, he agrees to aid them in their plot and the three depart for the past.

Jūn Pò informs both soldiers of Xī Yōu and the Order of the Divine Swarm of the truth surrounding the Void Junction, as well as him being a double-agent, and intends to stop Zhào Jūn Lín. Despite the animosity from both sides, the soldiers choose to join Jūn Pò in destroying all the Scrying Mirrors. Jūn Pò sets Xuě Yā free but keeps Bù Huàn imprisoned due to his loyalty to Míng Huáng, and that he intends to fight Zhào Jūn Lín alone using the Sorcerous Sword Index. Jūn Pò then tells Bù Huàn that should the latter free himself somehow, they would have one final battle for possession of the Index.

Dān Fěi arrives at the Void Junction and meets Wū Yáo, and they encounter the still-charmed Xuě Yā. Dān Fěi easily deduces he is in fact her husband, Cán Yún, and angrily knocks him down to remove his disguise, then dispels the charm cast on him. Cán Yún explains in a flashback that he was disguised as Xuě Yā by the latter to avoid detection from their enemies, and is angry he wasn't informed that he would end up under the influence of the Seven Blasphemous Deaths.

Dān Fěi, Wū Yáo, and Cán Yún assist Jūn Pò's troops to drive off the invading demons, while Jūn Pò himself battles against Zhào Jūn Lín. He pulls several swords from the Sorcerous Sword Index, but are ineffective against Zhào Jūn Lín due to his association with the dark arts. Jūn Pò ultimately settles on a flaming sword that burns away at his body. Xíng Hài interrogates Bù Huàn until Xuě Yā arrives carrying still intact Scrying Mirrors, which he offers in exchange for Bù Huàn's release. When Xíng Hài slips that her sister is of flesh and blood, Xuě Yā ends the ruse and leaves, revealing that Bù Huàn has long been gone from his prison and was communicating remotely. Bù Huàn arrives to aid Jūn Pò, but is unable to kill the demon sorceress as her blood is also cursed so her soul is transferred to whatever blade strikes her down. Xuě Yā arrives with Lóu Zhèn Jiè and the latter stabs Zhào Jūn Lín, transferring her soul back into the Seven Blasphemous Deaths. Agreeing to never return, Zhèn Jiè allows Xuě Yā to teleport him into the vastness of space, where he dies with the screaming Seven Blasphemous Deaths in his arms.

Dying from his wounds, Jūn Pò asks Xuě Yā to teleport him to the Emperor's chamber in Xī Yōu, while telling his soldiers to accept Dān Fěi's offer to join the Hù Yìn Shī, and bidding Bù Huàn and others farewell. Upon arrival, it was revealed that Huò Shì Míng Huáng was in fact the Emperor of Xī Yōu and kills Jūn Pò. Cháo Fēng arrives and is angered at Jūn Pò's treachery and stomps at his corpse. Míng Huáng nevertheless commends his daughter for running the country in his place.