Margrave University in 2001, and Raine Creevy is enjoying her first trip into the future. For the Doctor, there are mysteries to solve: what are the alien creatures imprisoned in the science labs? And what are the true motives of the student Scobie and his followers? With enemies on all sides, the Doctor teams up with his old friend Brigadier Bambera and the forces of UNIT in a battle for the future of the whole world.