Tomboy Biane's wish for a nice, rich father is realised, and she tries very hard to act a lovely daughter for her new stepfather. However, she has to swallow her anger at her sullen stepbrother Gona, while Gona tolerates his kiss-up stepsister for his ideal stepmother. How can they get along together? Meanwhile, Shion, the boy who has a crush on Biane, burns with jealousy when he mistakenly suspects that Biane and Gona are dating.