Emi had been passionate about making sweets since her childhood. However, her life as a patissiere came to an abrupt end when she was hit by a truck. When she awoke, she found herself reincarnated as Chantilly Merveilleux, the daughter of an earl, in a different world. She's bullied by maids and her father treats her coldly, but worst of all... there are no sweets in this world! “I can't take this! If sweets don't exist, then I'll just have to make my own!” With the determination to introduce sweets to this world, Chantilly leaves her home. She learns about an exam being conducted to hire chefs for the kingdom’s frail yet handsome second prince. Once hired as his personal patissiere, they work together to solve their problems using sweets. Over time, their professional relationship evolves into something else that's completely different...