After solving the mystery of the koala-nappers in The Tripp Diaries #1, Nick Tripp and his family are back on the road and facing their next challenge – the Nullarbor Plain. This time Dad is the one in danger when he offers to help out an old truckie by driving his Semi across the desert - and is swallowed up by the mysterious Nullarbor Triangle. It's up to Nick to rescue his Dad, save his sister, capture the evil Tiny Tim, break the code and find the missing fish. Not easy for a regular 13-year-old kid with no super powers, who has never even kissed a girl! Between each chapter Stig and his friends present a madcap, in-car variety show with original songs, hilarious sketches, a guest appearance by Neighbours star Alan Fletcher and the return of Butternut with his acclaimed rap song, Butternut the peanut butter nutter!