Xu Weiming accidentally travels through time into the body of an 83-year-old elderly man suffering from a serious illness with only one month of life remaining. In this time of crisis, he awakens the righteous punishment system. As long as he steps forward to uphold justice, he can receive rewards to extend his life. He takes righteous action to stop bus seat bullies, clear ambulance lanes, and rescue victims of domestic violence. Following the clues, he gradually investigates usury and underground casinos, locking onto a transnational criminal syndicate. To protect peace, the old man enters the game undercover, using his wisdom and system props to penetrate the core of the enemy. At the critical moment of capture, an unexpected event erupts. He steadfastly defends justice, coordinates with power and forces of crime to engage in a standoff, and vows to bring the outlaws to justice.