Description: The Cybermen are now in control of the ship and they have eliminated their human accomplice. The Doctor, Adric and several members of the crew are now their prisoners. Tegan finds herself separated from Lt.Scott and she too is soon taken prisoner and is reunited with the Doctor who realizes just what the Cybermen are going to do: use the spaceship as a flying bomb. Scott and the other troopers make a rescue attempt. Adric tries desperately desperately to stop the ship from crashing into Earth.