An Youqi, framed by her stepmother and exiled abroad, becomes the top killer "Poppy". After a one-night stand with Fu Yunzhou during her final mission, she returns six years later with their son Mobao, whose voice can heal Fu's mother. They cooperate to confront Fu Ziyan's harassment, schemes from An Ran and Song Wenran, and pursuit by the "Wolf" organization. With Mobao's help, they expose the truth, get revenge, marry, and welcome a new baby.