A classic first Doctor novelization! The TARDIS brings the Doctor and his friends to a space tracking base in the Antarctic - and straight into trouble! A space mission is going badly wrong, and a new planet has appeared in the sky. Mondas, ancient fabled twin planet of Earth, has returned! But, once the inhabitants used to be just like the humans of Earth, they're very different now. Devoid of emotions, their bodies replaced with plastic and steel, the Cybermen are here! As the Cybermen take over, the Doctor is dying!