All the male characters in the play seem to appear in four episodes. There is no detailed post of four girls and one girl in this drama, only a simple and detailed introduction. On the contrary, auxiliary colors are added to male characters between them and each other. "Little Three" has four heroines and four story lines. Every episode seems a little busy.

There is no doubt that the men who were killed are related to these four women, and the basic evaluation is among the men here: He Ying is a criminal defense lawyer in a divorce lawsuit in a law firm. She receives the task of filming her ex-boyfriend's daughter-in-law's private life every day, and finally falls in love with her ex-boyfriend again and intervenes in their marriage life.

Jingyuan is a teacher, and her husband is a famous chef of special dishes, a network celebrity of podcasts and TV programs. But because her husband was found to have less sperm, she was not familiar with Jingyuan. Then deceive the feelings of Jingyuan to achieve their own works.

Han Shangxun, a single man, deliberately approached Shiyan and secretly investigated her husband, as if something unpleasant had happened to Shiyan's husband. Moreover, he cheated Shi Yan of her husband's security money without repayment, and comforted him when the domestic nanny and husband who were still alive in product research and development gave birth to Shang Xiao, and confessed that Shi Yan was in love with her. Shiyan fell into the trap of these people step by step.