The Rhythmic squad have been training hard for an important competition, but disaster strikes when one of the team is struck down with an injury, and the chance for the girls even making it to the competition is looking unlikely. And things aren't going so well for trampoline gymnast Corey, who is struggling to make anything go right at his training camp at Lilleshall. In the Gym Stars challenge, Nile Wilson and Luke Strong take on the Acro squad to see who is the ultimate in handstand trickery.