A massive undersea vessel under the command of Carl Nelson, the crew of the Explorer found themselves in dire straits when the rudders were damaged by an underwater rockslide. Surfacing near Mondo Island, home of the soon-to-be-legendary King Kong, the team traveled ashore while repairs continued on the vessel. As Carl Nelson, Susan Watson, and Jiro Nomura fled the monster-infested isle; King Kong attacked the submarine in search of the beautiful Susan. The rudders were still ten minutes from full repair; so in a bold move, Susan saved the submarine by pleading with Kong to return to shore. He eventually understood, and the Explorer managed to retreat.

When the Explorer returned to New York, the crewmembers revealed the existence of the marvel that was King Kong and returned to the island to perform further research on the creature. Upon their arrival, Kong was nowhere to be found! In his last breaths, a native, mortally wounded by gunshots, informed the team that the mighty ape was taken from the island by force. Carl Nelson understood, and came immediately to the conclusion that the dreaded Dr. Who was behind the heinous operation. The Explorer was ordered to rendezvous with a Japanese airplane in the middle of the ocean, and so this submarine's minor part in the complex web of unfolding events met an end as the UN taskforce was forced to regroup and collect their thoughts.