It portrays what happens after the dirty Kim Hye-in, the only witness to the murder of a high school girl, moves to Cheongdam International High School, where everyone wants, and meets Baek Je, the main suspect.
My Melody's new cake shop thrives after finding a mysterious heart. Rival Kuromi's shop struggles. Both prepare for a contest judged by Chef Pistachio, unaware it'll endanger Mariland.