Plot: Nana is having a clear-out and Sam is helping her carry some heavy boxes to the car to take to the school jumble sale. Harry tries to lend a hand, but to his dismay, discovers that he isn’t strong enough! A trip to Dino World is called for to find the solution to Harry’s predicament, and he’s motivated even further when he realises that he needs to be stronger to help Nancy Nanosaurus lift Clown Mountain to retrieve something that has rolled underneath