After undercover agent Guan Xiaoshan was betrayed by a mole, he drove off to draw the pursuers away and cover his companions' retreat. He rammed into a certain shrine and detonated the explosives in his car, killing himself and the pursuers. When he opened his eyes again, he discovered that he had transmigrated into the body of a black-skinned beat cop in Jiu Si Cheng who shared his name. And so the story begins!
