A romance comedy parodying fairy tales such as Little Red Riding Hood, The Ant and the Grasshopper etc. Ryōko Ōkami (the eponymous Ōkami-san) is a tomboyish high school girl. She is a member of a "trading" club so called Otogi High School Bank. She and the other members of the club (such as her partner Akai Ringo aka Little Red Riding Hood) fixes student's (or "client") problems, at any lengths, in exchange for the student helping them out later.