With Max’s mother out of town, Zoe finds herself stuck in the maternal role of making sure the house stays in order.  Insisting they have no need for mothers or mother figures, Max and Rex ditch Zoe, heading off to the Swiss Alps, the scene of the latest dinosaur appearance. As fate would have it, the dinosaur in question is also a mother, and fiercely protective of her little egg. Their latest challenge promises to instill in Max and Rex a healthy respect-if not abject fear-for the unbreakable bonds between a mother and her child.