In this action comedy, a jewel thief named Miles Logan finally manages to secure a coveted diamond in a daring heist. However, his celebration is interrupted when the police arrive at the scene, forcing him to hide the valuable loot in a construction site before being arrested. After serving a prison sentence, Miles emerges with one goal in mind: to recover his treasure.
Upon returning to the city, he discovers that the construction has been completed, and in its place stands a police station. To retrieve his diamond, Miles has no choice but to pose as a newly assigned police officer. With his cunning and a few tricks up his sleeve, he successfully infiltrates the precinct. However, being a "detective" is not as simple as he thought.
As he tries to earn the trust of his colleagues, especially a sergeant who sees right through his facade, he finds himself facing various comedic and dangerous situations. As he dives deeper into his role, he begins to question his former lifestyle and what it truly means to be a "good guy."
The hilarious chaos escalates when other criminals get involved, forcing Miles to decide between his old path and the new one he has started to build. In this quest for the diamond, he discovers that friendship and loyalty are worth more than any jewel.