High school could debatably be the hardest part of ones life, but for the students of Highcliff Highschool in Cambridge, Massachusetts, it became hell on one seemingly normal day. One that will change the course of their lives as their very dimension merges with another. How will the myriad of students and faculty survive in this new, strange, and dangerous situation? What decisions will they be forced to make to survive, and what will they end up becoming?