Billy Magnusson, a twelve year-old boy, has been the target of The Mandela Effect, an energy wave that attacks him, erasing pieces of his past and adding new details to his life script. Billy would describe the attacks as like riding a surf board atop waves he can't see coming, and he never knows when the next energy wave might hit him.*These waves isolate Billy, they're growing stronger, changing bigger chunks of his past, and they're driving a wedge between him and his father who seems to know more than he's saying.*When Billy attends a new school in Florida, he's forced to join The Ascension Club, where he meets an odd mix of kids he can finally trust with his secret. Together they discover a weapon that will soon threaten them all unless they can stop it.