Thirteen seeks to deliver on her promise and destroy Seven, but she must first overcome an assassin's worst enemy — emotion.

Mad Bark is outplayed by a new killer: a guitar-strumming dog whose acoustic "Magical Sound of Sadness" strikes a lethal chord.

With Seven's hands tied by an invisible lizard assassin, Cola convinces the Prince of Stan to take her to Stan.

Captain Jack returns to settle scores with Seven, who summons the powers of the Thousand Demon Daggers.

King Pheasant, now a special soldier for Stan, kidnaps Seven and Xiao Fei and sets out to kill Da Bao, but a ghost from the past returns.

Seven prepares for a date with Thirteen. When he falls for a trap, he finds a way out of the bind by channeling his tonsorial qi.

Back in the past, Seven joins the Shadow Killers, faces off against Redtooth and sets out in search of the Thousand Demon Daggers.

Redtooth arrives on the Island to confront Chairman Jiang, who activates the powerful White Lily Blossom with Seven's help.

Seven reconnects with his old self, but to defeat the Blood Demon, he must harness the power of Xuanwu martial arts — and the barber within.