 The Mercora respectfully ask the Animorphs to surrender their warhead, thinking they can use it to dissolve the comet, and Tobias agrees to let them have it.However, realizing that the Mercora must have died in the explosion as they are not a current part of Earth and that the comet will cause the Cretaceous–Paleogene extinction event, he tells Ax to render it useless.The Animorphs escape back into the ocean, and the force of the comet propels them back to their own time.