Carter, April and the "past" Turtles are being attacked by monsters towering fifty feet over them. The heroes finally escape and get the weakened "present" Turtles back to the lair. April heads off to warn the authorities of Lord Dregg's attack plan. Dregg and his crew plan an invasion of Attack Monsters to take over Earth and make it his new home base, but first he has to get his transporter chip back from Shredder... Meanwhile Krang and Shredder free themselves from the rubble of the caved-in building and head back to the nuclear power plant.