Zac gets into all sorts of trouble while thought-linked to Beta, a boy living in the year 5010 who needs his help on a history assignment, but when twentieth-century Zac needs help with a project on the Romans, Beta is gone.
Josh and his new stepbrother, Tom, seem to have nothing in common when they first move in together, but when Tom begins sleepwalking, Josh makes a frightening discovery.
Brad, Conor, and Scott are bored until they find a briefcase containing a cell phone number that leads them on an adventure, following one clue after another until they find a treasure in a cave--but can they find their way out again?.