Wei Ge, a struggling fitness trainer ranked last in sales and on the verge of being fired, unexpectedly activates a comeback system. His training results improve dramatically, allowing him to rise through the ranks and become the gym's top salesperson. Jealous colleague Da Ze teams up with a biased manager to deliberately divert clients away from him. They even persuade longtime member Sister Liu and her daughter to set him up by pretending to sign up for training sessions and then making false accusations, hoping to smear his reputation and force him out. Armed with his system, Wei Ge turns their scheme against them, exposing their conspiracies one by one in a satisfying workplace counterattack.