When her mother is abducted by aliens on Christmas Eve (or "Smekday" Eve since the Boov invasion), 11 year-old Tip hops in the family car and heads south to find her and meets an alien Boov mechanic who agrees to help her and save the planet from disaster.

Eccentric inventor Caractacus Potts, his two children and his beautiful lady friend, Truly Scrumptious go on a picnic at the beach where they are soon whisked into a magical world of pirates, castles and a flying car called Chitty Chitty Bang Bang. In the adventure that ensues, they journey to Vulgaria and encounter the evil Baron Comburst and his child-hating wife, who kidnaps Potts' children and steals the magic car. With the aid of the village...