Yun Dongju, an Olympic gold medalist turned rookie cop, as he faces skepticism and harsh challenges in his new police role. Assigned under the gruff detective Go Man-sik, Dongju struggles with a critical mistake that jeopardizes a high-profile case called "Golden Rabbit." Amid mistrust and a tough disciplinary hearing, Dongju must prove his worth beyond his athletic past in a gritty world of crime and corruption.