Brains and Tin-Tin embark on an expedition to Lake Anasta in search of sunken treasure, but the Hood will stop at nothing to seize the spoils for himself.
| Actor | Role |
|---|---|
 Ray BarrettThe Hood / John Tracy (voice) | The Hood / John Tracy (voice) |
 David GrahamGordon Tracy / Brains / Kyrano / Hassan Ali (voice) | Gordon Tracy / Brains / Kyrano / Hassan Ali (voice) |
 Christine FinnTin-Tin Kyrano / Grandma Tracy (voice) | Tin-Tin Kyrano / Grandma Tracy (voice) |
 Peter DyneleyJeff Tracy / Professor Blakely (voice) | Jeff Tracy / Professor Blakely (voice) |
 Shane RimmerScott Tracy (voice) | Scott Tracy (voice) |
 David HollidayVirgil Tracy (voice) | Virgil Tracy (voice) |