Ephraim thought his universe-hopping days were over. He's done wishing for magic solutions to his problems; his quantum coin has been powerless for almost a year, and he's settled into a normal life with his girlfriend, Jena. But then an old friend crashes their senior prom: Zoe, Jena's identical twin from a parallel world. Zoe's timing couldn't be worse. It turns out that Ephraim's problems have just begun, and they're much more complicated than his love life.
Ephraim is horrified when he comes home from school one day to find his mother unconscious at the kitchen table, clutching a bottle of pills. Even more disturbing than her suicide attempt is the reason for it: the dead boy she identified at the hospital that afternoon - a boy who looks exactly like him. While examining his dead double's belongings, Ephraim discovers a strange coin that makes his wishes come true each time he flips it.