Qin Mu, who was about to reach the end of his life, was unexpectedly reborn as an eighty-year-old cancer-stricken old man, and accidentally awakened the justice old man system. With a full heart of justice, with the blessing of the system, he transformed into a subway judge to punish the evildoers, and drove away the aunt who forcibly occupied the basketball court to dance. In an unexpected afternoon, he helped his uncle catch the evil man who had been absconding for many years.
