Bowser and Queen Beryl summon Megatron and his Decepticon forces to Earth as part of another attempt to conquer the planet and obtain the Chaos Emeralds.

Meanwhile, the Autobots flee to Cybertron to help Optimus protect Zordon from the Legion of Doom.

However, they will soon have to return back to Earth when Megatron sends a video message to Optimus Prime, forcing him and the Autobots to fight him in open conflict one last time or else the Emerald Searchers will pay the ultimate price.

Little does anyone suspect however that Megatron's so-called "Final Battle" is really only the first step in Bowser's secret plan to help aid his master in launching the end-game for all worlds...