Shy outcast Kokoro has been avoiding school for weeks when she discovers a portal in her bedroom mirror. She reaches through and finds herself transported to an enchanting castle where she is joined by six other students. When a girl in a wolf mask explains that they have been invited to play a game, the teens must work together to uncover the mysterious connection that unites them. However, anyone who breaks the rules will be eaten by a wolf.
Kota Shimoda, Nao Nakamura and Norisuke Uehara live within the same apartment complex in a provincial city. They are also good friends. Kota Shimoda works as a public officer. He bluffs that he is good at fighting, but he has never been in a fight before. Nao Nakamura wants to become a Hollywood celebrity. She is a bright and outgoing person. Norisuke Uehara's dream is to become a K-pop artist, but he doesn't make any effort in achieving his dream. They are bored easily and look for stimulation around them.
Sugimoto Taeko moves in with her daughter Natsuki and granddaughter Mizuki. They begin a lively life together. In the midst of it all, Taeko sees her former self in Mizuki. The bitter taste of the first pineapple she ever ate, the disastrous score on a math test, the awakening of her acting spirit at a school performance. As Taeko recalls her elementary school days, she unleashes a dream that she had long given up on and sealed away. 'I'm going to be on stage!' Taeko immediately auditions and devotes herself to rehearsing for a Shakespeare play. But just then, the theatre where she was going to perform goes bankrupt, and she is forced to give up on her dream again!