Twenty-year-old Su Yan is so poor that he lives in a storage room of a law firm, wears fake Converse, and eats Pinduoduo ham. Some people live in a mansion, but she lives in a storage room at the foot of the bed where the case files are placed. She set a rule for herself: only fight the right lawsuits and don't make dirty money. From the milk tea shop scam to the Internet celebrity termination case, from the housewife's compensation for housework for 18 years to the blood debt of the chemical factory for 15 years, she brought one "plaintiff" to the court one after another. The stray cat she named "Plaintiff" at the entrance of the alley was her only audience. Someone asked her what she was trying to do, and she said: The world is fucked up, but someone has to stand on the plaintiff's bench. What she wants to win is never the lawsuit, but the people's hearts.