The year is 2012, the Earth was in peace, but then the Vortaak appeared and attacked Tokyo Town. They sent three monsters to take over the planet; King Ghidorah, Mechagodzilla and Gigan. But Godzilla and Anguirus were always there to defend the Earth. Recently, it has been discovered that Paint is their weakness. Sackboy bravely stood up to fight, and fought the three kaiju. But the Vortaak then hated Sackboy and mechanized the three monsters. The result was Mecha-King Ghidorah, Mechagodzilla 4000 and Mecha-Gigan. It is up to Sackboy to fight for the Earth!