As a long dormant volcano in Alaska suddenly erupts, the crew of the Calico decides to investigate the phenomena. Suddenly, an enormous winged creature called the Firebird, since she literally thrives in super-heated lava and breathes fire, emerges from her resting place in the volcano (there is actually a legendary avian creature by that name in Russian mythology, though this fact is not alluded to in the show). The Firebird flies across the frozen Arctic Sea to find a place to spawn, the heat from her body causing huge floods as her very proximity melts glaciers. Godzilla is called to the rescue by his human friends, and after a fierce battle, he defeats the Firebird by trapping her in an undersea cave

As the Calico investigates a strange electromagnetic power source beneath the sea near the Bali Trench, an oil tanker is sunk by what appears to be a bolt of lightening that originates underwater. As Dr. Darian, Brock, and Godzooky travel underwater in the bathysphere, they are attacked by the source of the lightening bolt, the Megavolt Monster, an aquatic kaiju that resembles a giant electric eel. The monster severs the bathysphere's umbilical cord, and the craft ends up landing on an underwater desert that's protected by an air bubble. There the trio discovers an entire colony of Megavolt Monsters who acquire their electrical power by feeding off an electrolyzed outcropping of stone, which appears to be the mysterious power source that the crew first investigated. After battling the first Megavolt Monster to a standstill to save the Calico, Godzilla arrives at the underwater desert to save the bathysphere crew, and he penetrates the air bubble, causing the sea to rush in and de

San Francisco is threatened as a bizarre, quadrapedal multi-colored subterranean monster appears underneath the city. The creature is called the Eartheater, since it lives by devouring huge amounts of rock, soil, and steel, wreaking much havoc in the process by causing buildings and other man-made structures to collapse; the Eartheater also projects waves of sonic force from two antennae on top of its head to help it dig, but which can also be utilized as a formidable weapon in battle. As the crew of the Calico travel into the underground tunnels created by the Eartheater to investigate, they're trapped by the creature. Calling on Godzilla for assistance, the Big G rescues the Calico crew and drives the Eartheater above ground during the ensuing battle. As the earth-devouring monster climbs the Golden Gate Bridge to escape, Godzilla knocks the creature off of the structure with his laser beams. Landing in the water, the Eartheater discovers his fatal weakness as he dissolves into mu

After discovering the ancient hidden pyramid of Ra-Mal in Egypt, an archeologist named Jarvis is suddenly besieged by two giant, quadrapedal sphinx-like monsters made of stone, who attack the hapless scientist with waves of freezing winds from their mouths. As the crew of the Calico docks in a small town near the Nile River, they come across the severely frostbitten Jarvis, whom they nurse back to health. Jarvis then describes his ordeal to the crew, explaining that the Stone Creatures are mystical guardians of the pyramid who will attack anyone or anything that dares approach it. Naturally, the Calico crew decides to investigate, and they fly their mini-copter to the area, only to be attacked by the Stone Creatures themselves. They call upon Godzilla, who engages the rocky beasts in battle, at one point being frozen solid by the combined might of both the creatures' cold blasts. Godzilla finally defeats the Stone Creatures when the two rocky monsters charge him simultaneously, a

While diving in the sea near the West Indies, Dr. Darian and Brock are startled when they are attacked by a bizarre mutant life form...a creature composed entirely of seaweed, which continues to grow increasingly larger as the plant beast merges with more and more seaweed. The two divers barely escape the plant creature's two huge tendrils as they frantically swim back to the Calico. There they call upon Godzilla to deal with the creature, and while the Seaweed Monster is no match for Godzilla, the Kaiju King can't seem to severely injure the plant creature's physical substance. As the Seaweed Monster menaces a nearby inhabited island, Dr. Darian notices that a severed piece of the creature completely dried up after excessive exposure to sunlight. Thus, she directs Godzilla to drag the Seaweed Monster onto land, where the searing tropical sunlight eventually causes the plant creature to wither and die.