On a rainy day after school, a group of friends remains to ready themselves for the upcoming school festival. What starts as casual ghost stories takes a terrifying turn when a massive earthquake shakes their world, leaving their school in ruins. Upon regaining consciousness, they discover they are now in a parallel school frozen in time since 1927, with eerie signs of abandonment. Trapped in this nightmare, they must unravel the mysteries of the school to escape the grim fate that claimed the lives of many before them.