In this action-packed anime, young Umi, Sora, and Ao work incredibly hard to help other people. The three schoolgirls hire themselves out for odd jobs in their spare time, which doesn't leave them much time to go to school themselves, but does give them a great deal of experience in life. Between doing homework for their fellow students and cleaning sewers, these girls have done it all. However, they now face their greatest challenge in convincing a drop-out to return to school!