S1·E27 The Aquanauts

Professor Ramon De La Porta travels to Loch Ness, Scotland and its sunken Atlantean ruins which hold the Primal Water Stone. Dr. Jenkins, Jason, Tann, Lua and Kong arrive to stop him. Ramon merges with the Loch Ness monster and attacks. Jason merges with Kong to fight the newly-created Cyber-monster, but Ramon/Nessie beats Kong unconscious. Underwater dwellers known as the Aquanauts rescue Kong/Jason and take them to their underwater Atlantean city and the Temple of Kong. Dr. Jenkins, Lua, and Tann arrive and join them in Tann's mini sub. The Aquanaut Queen falls in love with Jason. Ramon/Nessie attacks, aided by an army of Ramon's mini subs firing advanced weapons. Working together, the group and the valiant Aquanauts defeat Ramon and his minions, setting Nessie free. The Queen throws a big party. Kong and Nessie play.