The Head

Jim wakes up to find an alien, Roy, who claims to be saving the human race, has inhabited his head, expanding it to unconventional proportions and alarming local scientists, feds, and extraterrestrials alike.

As the Feds' search for Jim intensifies, he works with Roy to recover the first of five pieces of a broken machine that could stop an invasion of new, parasitic aliens who want to destroy the human race.

Jim's quest to locate the second piece of the anti-invasion machine is hampered when evil adversary Gork steals it and cripples Roy.

Jim and Roy team up with Meredith as they venture to South America and battle natives to attain the third piece of the machine.

Roy sees that the Orb, the last piece of the machine, is already in the hands of Gork and the Feds. After Jim and Roy retrieve it, they are shocked to realize a spy among their own ranks helped the enemy capture both Roy and take back the Orb.

With the spy now on his side, Jim strengthens his forces in preparation to rescue Roy from Fed possession. A race ensues between Jim's team to save Roy and capture the Orb before the evil space aliens can use it to destroy the human race.