Rainbow Parakeet is a genius as an actor, and a thief at the same time. As he is not a full-time thespian, he is usually hired as a replacement. During the performance, he steals from the wealthiest members of the audience or even actors, depriving them of the contents of their purses or their jewelry. True to his alias name "Rainbow Parakeet", he can assume the role of almost any part and change into any costume, and his repertoire is immense. His methods are a mystery, even to the detectives charged with apprehending him: Police Inspector Senri and his daughter, Police Detective Mariko Senri.