Seafood wholesaler Lin Hai returns from the sea, running into his mother-in-law Liu Mei abusing his crippled elderly father Lin Dashan, which triggers accumulated grievances. He investigates the truth, discovering his wife Wang Qian had long been having a secret affair with the scammer Zhou Kai, transferring 7.5 million in assets, and also tricking the illiterate Lin Dashan into signing a 30 million false guarantee letter, plotting to embezzle the family property. Lin Hai feigns compromise while secretly securing evidence. Wang Qian and her mother spread rumors and cyberbully to ruin the restaurant, and Lin Hai releases surveillance footage to expose their malicious acts. In the end, Zhou Kai is arrested, Wang Qian and Liu Mei are caught on live scene coercing the old man to record a video, and all are sentenced. Lin Hai transforms the basement where his father was humiliated into a physical therapy room, and the father and son welcome a stable new life.