Zak Monroe is (not) My Friend

Sam has been best friends with Cal, Fin and Jay for EVER. They're all about to move up to a new school together - scary but exciting. But then he overhears them saying they're not going to put him on their Friends Lists! So Sam will be stuck in a different tutor group with a lot of kids he doesn't know. Help! How can Sam convince them to change their minds? Can he keep on hiding his new friendship with weird new boy Zak Monroe? And what will happen when these two sides of Sam's life collide?