The invasion is over. UNIT has received its baptism of fire. However, the events have left the British government licking its wounds and looking for a scapegoat. UNIT is licking its wounds, also.

The Doctor has vanished, to the annoyance of Brigadier Lethbridge-Stewart, and the organisation still lacks a scientific advisor. Maybe the introduction of Major Branwell will help ease the pressure.

Meanwhile, life is seemingly good for Isobel Watkins, snapping away with her little black box and loved-up with her dolly soldier, Captain Turner. Not so her uncle, whose involvement with International Electromatics appears to have left him black-listed by the scientific community.

But some of the victims of the recent invasion may not be as dead as originally believed. Such as Tobias Vaughn himself.

With pressure from the government on one side and key people disappearing on the other, the Brigadier and his trusty team find themselves battling the odds once again to protect the world.

And just what is Tobias Vaughn’s secret?