The team heads towards his underground hideout, which again is somewhere in the "City in the Sea". The heroes head towards the bunker, going through the library and the computer lab, where the doctor appears on the computer screen, calling himself the creator of a new world. Deep down is a bio-lab, and below it is a cave, which finally leads to Fessenden's lab. Seeing the team, he transforms himself into a Morgue-like creature, but is beaten. By now, the transforming serum's effect reaches its peak, and Fessenden transforms into a three-headed creature, but the heroes manage to defeat him.