After Shredder escapes captivity by teleporting in the beginning of the movie, Krang teleported him to his dimension to tell Shredder about his plans for Earth. In particular, his transport device the Arc Capacitor was splintered,and its parts scattered across the Earth years ago that had the capability to make a black hole connecting his dimension to Earth once reassembled. Krang requested that Shredder gather them so that he would be able to invade Earth and rule the world. He also gave Shredder a purple ooze capable of mutating humans.