Shoka, who has been hospitalized for a long time with childhood cancer, but she went to the sixth grade and went to school for the first time in a while. However, her class is full of problems and she is on the verge of collapse. With a habit of saying "It's a fantasy!", Shoka changes the minds of the people around her with the "power to believe in miracles" that her best friend who is 50 years older than her in the hospital taught her.