Seymour and Opal are brother-and-sister rabbits who have adjoining rooms; in fact, Opal must pass through Seymour's room to get to her own. All is fine until Seymour decides to charge a nickel each time Opal wants to go into her room. Opal meekly pays up until one rainy day when Seymour, with nothing to do, begs Opal to play with him. Then she is able to bargain for something she wants, but readers aren't likely to feel that justice has been served, since the ownership of the nickels isn't resolved and the only sign of give-and-take is more like ""taking advantage."" The story is mildly amusing, the pictures very sweet and funny, but Opal's largely passive reaction to Seymour's extortion is puzzling.