When an underhanded pharmaceutical company goes to a remote tropical island to steal King Kong for advertising purposes, they get more than they bargained for when the gigantic ape attacks an unsuspecting village and an enormous octopus. Meanwhile, far below the sea, a submarine crew unleashes reptilian terror when they melt a block of ice and release the ferocious Godzilla from his icy lair. When both destructive monsters descend on Tokyo, it's a fight that holds the future of mankind in the balance.