The Machines Strike Back
A missile defense platform-drone malfunctions and threatens to destroy the East Coast of the US.
More from Season 2
Episode 1
Jonah and the Whale
The Seaview is on a joint mission with Russian scientists to salvage the remains of a Soviet undersea lab. While a scientist is being lowered in the diving bell, a giant whale arrives and rams the bell. The glass is shattered, killing him. Nelson and the remaining Russian scientist, Katya Markova, go on a second dive. The whale reappears, this time swallowing the diving bell whole! Now it's a race against thime as Captain Crane and the crew of the Seaview find the diving bell and get it out before Nelson and Markova run out of oxygen!
Episode 2
Time Bomb
Nelson is injected with a radioactive material that makes him a walking time bomb. This episode marks the first appearance of the FS-1!
Episode 3
...And Five of Us Are Left
Seaview comes to the rescue of newly discovered WWII survivors living in an underwater cave beneath a rumbling volcano.
Episode 4
The Cyborg
Cybernetic genius Tabor Ulrich creates a perfect mechanical duplicte of Admiral Nelson. His plot: to make the crew of the Seaview they are fighting World War Three. In doing so, the sub will launch nuclear missles at the China, Russia and the USA. After the holocaust, Ulrich plans to take over and usher in "the age of the cyborg".
Episode 5
Escape from Venice
Crane is caught up with a circle of spies as he tries to make his way back to Seaview with important missile defense data.
Episode 6
The Left-Handed Man
Nelson works on finding an assassin before he can kill the new Secretary of State.
