Alan Bennion

The planet Peladon is hoping to join the Galactic Federation. But King Peladon's Chancellor has been murdered and it seems that the legendary royal beast, Aggedor is to blame.

The Ice Warriors have taken control of Peladon. Pretending to cooperate, the Doctor concocts a plan to defeat the invaders.

On the Moon, the Doctor is captured by the Ice Warriors and learns that they intend to use T-Mat to spread a deadly fungus across the world.

The work of the committee is hampered by sabotage, fear and suspicion. The Doctor knows the Ice Warriors of old and believes that they may be the guilty party.

With the commerce of the world grinding to a halt, the Doctor, Jamie and Zoe agree to investigate and set off for the Moon in an old fashioned rocket.

The Doctor and the miners take the upper hand in the fight to reclaim Peladon from the Ice Warriors. But Eckersley is unwilling to give up and takes Queen Thalira hostage.