Reinya appears to be an ordinary girl working at a convenience store but she is in fact, the Phantom Thief Reinya. Together with her assistant Chuutarou; in their secret hideout right below the local convenience store, Reinya hatches plans to steal various treasures made of gold. They face an incompetent trio of a perverted police inspector, a policewoman who is a natural airhead, and a detective totally infatuated with Reinya, all of them in a police station beside Reinya's convenience store.

(Source: Anime News Network)