Whilst Mothra was dealing with Hedorah, Kong continued to live a peaceful life in the Hollow Earth with his family. But now, he's discovered that there are more giant apes in the Hollow Earth. However, they are all being enslaved by the evil Skar King, a brutal tyrant and dictator who now seeks to usurp Kong as ruler of the Hollow Earth. But Kong isn't ready to give up his throne without a fight.
