A careless angel flying high above PSY・S City accidentally drops seven special hearts that govern the night. When the purple heart flutters through the window and lands in the player's living room, they set out to find the other six and restore them to heaven.

A careless angel flying high above PSY・S City accidentally drops seven special hearts that govern the night. When the purple heart flutters through the window and lands in the player's living room, they set out to find the other six and restore them to heaven.