Terry Scully

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.

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.

As the Martian fungus begins to spread, Zoe, Jamie and Gia Kelly attempt to strike back against Slaar and his occupying force of Ice Warriors.

An Ice Warrior invasion fleet is on its way to the Moon. Back on Earth, the Doctor devises a plan to destroy the Martian fungus.