When a netball trophy is stolen at Half Moon's school, the finger of suspicion points at the kids in the metal work club and a race against time to uncover evidence which will tie them to the crime begins. Meanwhile, Moon's sister Hazel is in charge of sponsorship money for the school Fun Run, and she has the key to the school safe to prove it. Moon seems to be allowing his crush on a girl at school, Chelsea, to cloud his judgement in his investigation into the theft of the cup, and Red tells him as much. Is 'faultless' Chelsea somehow involved in the crime? Or has she actually been framed by April? As the Fun Run gets underway, an even bigger threat emerges...