In the middle of a long summer vacation Nagara and her friends are cought up in a mysterious situation. Her and all her 36 classmates end up drifting into another dimension, acquiring mysterious powers in the process. Distrust, jealousy and conflict start emerging among them as they dissagree on how to use their powers or how to return to their original world. The boys and girls are suddenly thrown into a life of survival. The first episode received an advance release on YouTube on June 19. The regular TV broadcast started on July 16, 2021.