In an undersea laboratory, three villains see a ship passing by. Salamandro, the ringleader of the trio, sends his henchmen to the ship to steal the gold bullion it's carrying. The men enter the transportation machine their boss has invented, and seconds later, materialize on the ship's deck. There, they paralyze the captain and his first mate. Then they go down to the vault, freeze the guard, and remove the gold. One of them sends a signal to Salamandro to let him know they have the loot. He brings them back, and gloats over the successful theft. Sometime later, Samson and Goliath are on a ship carrying a crate load of paintings. The captain expresses concern that the art will be stolen. The heroes go into the vault via a funnel, and hide themselves in the crate that holds the paintings. Salamandro sees the ship go by, and sends his goons directly to the vaults so they won't be seen by anyone. They find the crate, and send another signal. When they open the crate, they are surprised to find Samson and Goliath inside. When the duo transform, the henchmen try to paralyze them, but Goliath melts their guns with his power beams. Salamandro traps the pair inside a steel trap, but Goliath uses his roar to break them out. Noticing that their enemies are gone, Samson and Goliath head for an iron door, but are momentarily stopped by the electro rays that appear on it. Samson lifts the door without touching the rays, and he and Goliath enter the next room. Salamandro is there, but he's behind a glass shield that the heroes can't penetrate. He explains that it's eight feet thick. Then another glass shield appears behind them, and a deadly mist is pumped in. Samson and Goliath escape by crashing through the ceiling. One of the accomplices fires a ray through a hole in the wall, and successfully immobilizes Goliath.