Kayo, with the help of a futuristic game creator that only talks like a wizard, must play through a futuristic holo-game called Cavern Quest to stop the Chaos Crew from stealing a powerful piece of technology - the Holotrix.
- Alan Tracy - Rasmus Hardiker
- John Tracy - Thomas Brodie-Sangster
- Kayo - Angel Coulby
- The Hood - Andres Williams
- Havoc - Aimee-Ffion Edwards
- Fuse - Craig Stein
Kayo: "Clock's ticking. Please tell me you can read that?"
Alan: "No problem. I've been stuck in this cave so many times, I can read every language from Argdal to Zilibish."
Kayo: "We should stop in and play some time."
[Mini-MAX passes the virtual reality goggles to Alan]
Alan: "Hold on, fun? Play? Do you hear the words coming out of your mouth?"
Kayo: (gets the goggles from Alan) "I can't be the serious one all the time... Alonius."
International Rescue Equipment Used
Non International Rescue Equipment Used
- This episode features elements adapted from the original Thunderbirds episode The Uninvited.
- This is the second episode to feature Alan onboard Thunderbird 5 but the first time he is on board with John.
- John is seen performing monitor duty on Tracy Island for the first time in this episode.
- This is the first episode where more than one person rides Basher.