Lin Dong took the blame for Big Brother B and was imprisoned for eight years. He was sentenced to life imprisonment until he was in despair. Ma Jun came to ask him to work as an undercover agent to investigate Red Star washing powder in exchange for his freedom. He agreed without saying a word: Anyway, it is better to wait for death than to fight. Putting on new clothes and walking out of the prison door, he squinted at the sunshine outside. The whole hospital is waiting. I will work undercover in Hong Kong Island first, and then go back to deal with those beasts in the courtyard!