When fifteen-year-old Carly starts getting nightmares, she knows something is up. First of all, she's never had a nightmare in her life. Second, she never wakes up from these nightmares in the same room as she fell asleep. But the third, and most important reason, is the boy in blue.
Percy Jackson is still recovering from the loss of his friends during the Giant War. Harry Potter is still recovering from the loss of his friends during the Battle of Hogwarts. Two boys so similar it's painful to look at. But what will happen when their nightmares change from the normal and they wake up in each other...
April, a teen from the Big Apple. Jay, a boy from the bad part of town. Mercury, a college student at Harvard. Alex, a rebel from Detroit. Four people, as different as can be, are brought together with one purpose: Protect the World.