Blood Debt: I Will Burn Their World - Episode 1

Scarlet confronts the person who raised her, who calls her the Shadow Guild's best assassin and vows to finish her. The episode flashes back to a final test five years earlier, when Scarlet locked four comrades—Lana, Dawn, Faye, and Yelena—in a gas-filled room and forced them to fight under a five-minute kill-or-die rule. Yelena is urged to survive as the group's hope while Lana, Dawn, and Faye plead and die. Back in the present, the mentor announces, "I'm sending you to them now!" leaving Scarlet facing imminent execution.