Originally from the planet Aquamar, the Ocean Force has travels throughout the universe in pursuit of the fugitive called Fathom. Just as they were about to catch the villain, he desperately enters a black hole in hopes to escape. Captain Nauticus and the Ocean force follow Fathom and end up in a 9 planet solar system. Fathom lands on the third planet from the sun called Earth. The team tracks metal unique to Aquamar and trace it to the Chesapeake Bay. They discover one of their own ancient ships that had been converted for ocean research by the planet's "hooman" inhabitants and renamed Nauticus. The Ocean Force decides to make it their new base in Norfolk, Virginia and vow to protect Earth from the same fate that their home planet Aquamar suffered at the hands of Fathom. In their first adventure to the ruins of Atlantis, the Ocean Force find and abandoned survivor named Zak and recruit him to the team.