A monster made of seaweed threatens an island full of tourists. Godzilla and the team must destroy it before it has a chance to attack.

After a fight with Godzilla, a caterpillar-like monster transforms into him and begins to destroy anything connected to electricity. The gang's friendship with Godzilla is put to the test as they try to prove his innocence.

The gang happens across the ancient City of Atlantis and they (including Godzilla) end up imprisoned in the city. They soon discover that all the cities residents are under a spell that can only be broken by destroying the giant robot guarding the city.