The orphan Fei Chihuai was brought into the killer organization by Mr. Qi, and he met his close friend Su Xiaoyang, and the two performed tasks side by side. During the selection process, Fei Chihuai failed to advance and faced obliteration. Mr. Qi imprisoned her, and Su Xiaoyang took her to defect and was hunted down by the "Traceless Organization". In a desperate situation, the two killed the leader of the organization, broke the rules of male power, and became the new masters of Wuhen. Fei Chihuai was codenamed "Brother Jiu" and Xiaoyang was codenamed "Butterfly". From then on, they were feared, opened a baking studio, and occasionally took on assassination missions.
Purpose: Women break the discipline of killer organizations dominated by men and live a life of vitality