Pretty Boy Detective Club

On their way home from school, Mayumi Dojima and Manabu Sotoin are abducted by a group that call themselves the Twenties. They are after a secret hidden within the star that Mayumi saw ten years ago. The remaining members of the Pretty Boy Detective Club take action to save their friends and finally face the Twenties in a battle! What will Mayumi's decision be after the search for the missing star ends?