Bob, Wendy, Spud and the Can Do Crew arrive in historical Fixham Harbour ready for a brand new set of building adventures. They make many discoveries, along with new team member Scratch. Dizzy's amazing wheelies are a real hit with the group, but when he is upstaged by another friend, Dizzy gets upset. Trying to prove that he still does the best wheelies, Dizzy starts to cause chaos on the building site!