Liu Yan, private-room manager at a hotel, gets fined 5,000 yuan by store manager Sun Haitao for a lopsided name badge. Afterwards, she sticks strictly to scheduled shifts and refuses unpaid extra work. Service quality plummets. Sun’s poor leadership ruins the star re-evaluation. He colludes with rivals to frame her. Liu Yan plays surveillance footage publicly to prove her innocence. The group CEO hires her as national training director. She defeats those abusing rules with rules.