Commander Adams convinces Dr Morbius that the Id monster is of his own creation and that, if he doesn't admit this to himself, the monster will kill everyone, including Alta. As the monster begins burning through the nearly indestructible door of the Krell laboratory where Adams, Alta, and Morbius have taken refuge, Morbius screams, "I deny you...I give you up!" and collapses on the floor. As he lies dying, Morbius tells Adams to throw a switch, then informs him that, in 24 hours, they must be 100 million miles away in space because an irreversible chain reaction will overload the Krell's nuclear reactors and blow up the planet. In the final scene, Alta, the Commander, Robbie, and the remaining crewmen are back aboard their spaceship, heading back to Earth. On the main viewplate, they watch Altair 4 explode. Holding Alta in his arms, Commander Adams assures her that, a million years from now, the human race will have crawled up to where the Krell stood in their great moment of triumph and tragedy and that her father's name will shine once again. "It will remind us", he adds, "that, after all, we are not God."