The Go Jetters are at Centre Court in Wimbledon, London, to watch the world's most famous tennis tournament. But just as they settle in to watch the doubles final, Grandmaster Glitch and his Grimbots gatecrash the court. Glitch is determined to win Wimbledon, but he is not adhering to any of the rules, and the umpire wants him to leave. But Glitch is staying put until he can play some tennis and win the tournament, so Kyan and Xuli head on to Centre Court to take him on!

It's a dark night and Glitch is flying his Grim HQ over the sea around the Isles of Scilly. He's in the middle of reading a bedtime story to his Grimbots when his lamp breaks! He needs a new light, and when he sees the Bishops Rock Lighthouse in the distance he demands that the Grimbots get him the bulb. Meanwhile, Xuli, Foz and Lars are flying the Vroomster nearby, and Lars realises that the bulb is missing from the lighthouse. Glitch and the Grimbots have taken it and turned it on inside Grim HQ. But the new light is so bright that Glitch can't see anything, and Grim HQ goes out of control!