After discovering an obelisk in Commander Rann's brain, the Micronauts are on a quest to find the three keys that will restore the Enigma Force. The obelisk warns of a disaster looming for the Microverse and the only way to stop it, is to bring back the Enigma Force. Meanwhile, on Earth, Dr. Strange is looking into the past to find out the hidden meaning behind the message in the obelisk. He is brought back to a time when a city is in peril and the Sword in the Stone promises to move the people to safety.
The Micronauts have traveled to Oceania in search of the first key to restore the Enigma Force. A Leviathan has eaten Commander Rann and Marionette and taken them to the bottom of the sea. The rest of the Micronauts are battling the sea creature to try and find out what happened to their team members.