About this episode
The gang escapes from one tunnel only to wind up in another. Only this is no ordinary tunnel – it’s The Crystal Caves which can act like a time machine if used correctly. Unfortunately, the Caves are beginning to flood. Luckily, HG Wells, famous author of the classic book The Time Machine (and a secret Problem Solver) arrives to help. Can the gang escape and get back to the future or will they wind up all wet?