Captain Troy Tempest and his right-hand man, Phones, are saved from imminent death during their first mission by Marina, a beautiful slave girl who lives underwater.

The worst catastrophe in Marineville history is avoided when Troy and Phones warn the battle station.

All's well that ends well in an episode which sees Troy dispersing laughing gas over Idotee, an evil sea creature who used a ghost ship to trap Commander Shore and Phones.

The Stingray crew are forced to cancel their holiday in order to investigate the Subterranean Sea, where their explorations lead them to a stunning discovery.

Stingray travel to Scotland to investigate the mystery of the legendary Loch Ness Monster.

Phones and Lt Fisher take up a challenge to become members of Admiral Denver's crew on an ancient sailing vessel. However they soon encounter problems when a storm blows up and the Admiral is knocked unconscious.