The theft of the Primal Stones from Kong Island threatens to awaken the ancient demon Chiros. Lua journeys alone to Chiros' ruined temple in an attempt to imprison him. She is captured and brainwashed by Harpy, one of Chiros' servants. They journey to the Island's volcano and set the demon free. Jason, Kong, and Tann arrive and Chiros awakens the monster Ominous to stop them. Jason merges with Kong and confronts him. In the fight Kong's anger transforms him into the gigantic Mega-Kong. He easily defeats Ominous forcing Chiros to retreat.

Jason, Tann, Lua, and Kong travel to New York City in an attempt to stop a series of robberies of ancient tablets connected to the Primal Stones. They discover that De La Porta is behind the thefts and is trying to learn how to unlock the power of the Stones. Kong and Jason are forced to battle two monstrous Cyber-Link creatures, BadKat and Slothbear, in order to stop De La Porta.

Jason, Kong, Tann, and Lua are forced down in Africa by engine trouble. Lua encounters an evil poacher named Rakhir who kidnaps her to use as bait for his real target--Kong! With his mercenary hunters, Rakhir ambushes and captures Kong. With the help of a baby gorilla whose father was captured by Rakhir, Jason and Tann defeat Rakhir and set Lua and Kong free. Jason merges with Kong, becoming Mega-Kong, and the hunters become the hunted.

Kong, Jason, Tann and Lua investigate a temple in the Atlantean ruins of Shama-Ra on Kong Island. Tann and Lua are possessed by the ancient spirits of the Atlantean King and Queen. They take the Primal Stone of Lightening from Kong's Lair and use it in an attempt to destroy their old enemy--Chiros! A massive battle takes place with Jason, Kong, and the Atlanteans fighting against Harpy, Ominous, and an army of Apbats. The minions of Chiros are defeated, but the temple is destroyed. Tann and Lua are released by the King and Queen who rejoin their ancestors.

In England, De La Porta forces a Druid Priest, Dr. MacKay, to agree to help him use ancient Druid ceremonies to unlock the powers of a Primal Stone. Kong and his friends travel to England to stop them. Merging with a wild boar, De La Porta dukes it out with Kong, forcing our heroes to retreat. The battle resumes at Stonehenge where MacKay is unleashing the power of the Stone. Merged as a fantastic cat/scorpion hybrid--the manticore--De La Porta holds Kong at bay until the Stone opens up a vortex into Infinity. Kong is nearly sucked into the vortex, but Jason merges with him and becomes Mega-Kong, escaping the vortex and defeating De La Porta.

De La Porta takes Tann's billionaire parents hostage in Paris, forcing Tann to agree to lead Lua into a trap. An unhappy and confused Tann sends Jason and Kong off on a false trail and takes Lua to a chateau outside Paris and into De La Porta's trap. Jason shows up with Kong, surprising everybody. Kong battles a Cyber-Link created Gryffin in a tremendous fight over the French countryside and Paris.

Jason, Kong, Tann, and Lua travel to Los Angeles in an attempt to stop De La Porta from stealing a stone tablet on display at an LA museum that contains the secrets of the Primal Stones. Down and out, director and stuntman, Howling Jack Crockett spots Kong and becomes obsessed with getting footage of the giant ape. Our heroes confront De La Porta at the La Brea Tar Pits Museum where they battle Cyber-Link monsters created by the evil professor's henchmen. Howling Jack arrives in a mechanical monster suit and gets caught up in the middle of the action. De La Porta is forced to retreat, but poor Howling Jack never gets his footage. Kong remains a secret.

Harpy takes Dr. Jenkins and Chon-Dar prisoner in an effort to find the Primal Stones. Jason, Tann, and Lua attempt to rescue them, but Harpy gasses Kong with giant spider venom knocking him unconscious. Lua merges with Kong's mind to try to bring him out of his coma. She is forced to grapple with Kong's inner demons. Tann uses rockets to drive Harpy and her apbats away. Chiros sends the giant monster Ominous against our heroes, forcing Jason to merge with a T-Rex. Jason is defeated, but Kong awakens and saves him, driving Ominous away and freeing Dr. Jenkins, and Chon-Dar.

Our heroes travel to Egypt to foil De La Porta's scheme to find the legendary Staff of Set, use it to activate a Primal Stone and resurrect Set, the ancient Egyptian God of Evil. Pursuing the Professor, Jason, Tann, Lua and Kong are forced to fight a giant Crocodile/Giggles Cyber-link created monster. They follow De La Porta to the lost city of Akur Vash, where the evil professor raises Set from his long sleep. Kong must battle the God of Evil to save the world. Merged with Jason and armed with the magical Flail of Osiris, he destroys Set.

Jason and company discovers that De La Porta is on his way to an isolated Himalayan monastery to seize an ancient parchment revealing the use of the Primal Stones. De La Porta and his henchmen attack the monastery, which is defended by a yeti. When Kong arrives, one of the Professor's men merges with the yeti and attacks Kong while De La Porta steals the parchment. Jason merges with Kong and they transform into Mega-Kong, defeating the Cyber-Yeti and recovering the parchment for the monks.

Jason is really excited when he receives an invitation to a karate exhibition in the city of Xi An in China! Unfortunately Tann was not invited and now plans to give up karate. Jason and Lua fly to China where they are kidnapped by Ramone De La Porta and taken to an area near the Great Wall. Buried in the nearby tomb of the first Emperor of China is a parchment that will reveal the secret of the Primal Stone of Life and Death. De La Porta threatens Lua, forcing Jason to enter the deadly tomb maze to recover the parchment. Tann merges with Kong and flies to his buddy's rescue. Together Tann and Kong rescue Jason and retrieve the parchment from the boobytrap filled maze. Kong battles with a Cyber-link created Chinese Dragon while Jason and Tann defeat the Professor and rescue Lua. Jason wins the karate tournament and Tann is proud of his bud.

On Kong Island, the evil Professor Ramone De La Porta forces Dr. Jenkins to take him to the location of the powerful, mystic Primal Stones. Jason, Tann, and Lua frantically search the exotic Island for the kidnapped scientist. They find Dr. Jenkins and De La Porta in the ruins of an ancient temple. De la Porta merges with a giant prehistoric bear, becoming Slothbear, and attacks them. Jason merges with Kong and defeats him

A ""sea monster"" is stealing hi-tech weapons. Jason and his friends suspect that it's De La Porta using the Cyber-Link. While investigating, they uncover De La Porta's connection with Andre a notorious underworld arms dealer. De La Porta attempts to doublecross Andre, but is taken prisoner in Andre's hideout in an offshore oilrig. Our heroes attempt to free De La Porta and keep the Cyber-Link from falling into Andre's hands.

18 year old Jason and his best friend Tann journey to the mysterious Kong Island hidden in the heart of the Bermuda Triangle. With them is their college Professor, Dr. De La Porta. After a close encounter with dinosaurs, Jason is reunited with his grandmother, Dr. Jenkins, and Kong. With them is the beautiful Jungle Girl, Lua. Dr. Jenkins has resurrected Kong via DNA splicing and the Cyber-Link, a communication and data link to the Web. With the Cyber-link a person can also ""merge"" with other animals. De la Porta threatens Dr. Jenkins in an attempt to steal her research and discover the location of the magical Primal Stones. He uses the Cyber-Link to merge with a sabertooth tiger becoming the monstrous Badkat. Jason merges with Kong and drives De La Porta away after an epic battle.