Synopsis

Lee Yuna, a D-rank killer, is targeted by a powerful individual who is seeking to capture Pietro. They threaten Lee Yuna's brother, who suffers from a life-threatening illness, offering to save him with an expensive serum if she cooperates. She is forced to act as bait, setting up a meeting point while a disciple, suspicious of her abilities, investigates her potential link to Pietro, leading to the revelation of an elaborate plan possibly orchestrated by Pietro from the start.