Business is bad for intergalactic media mogul Augustus Scullop, whose Trans-Gal empire is on the rocks. But, having retreated to his own private planet, Transmission, Scullop is about to gamble his fortune on a new show, made with an entirely new technology. And the name of that show is Laser.
Back in the real world, far from the realms of small screen sci-fi fantasies about monsters and aliens, the Doctor is interested only in watching Test Match cricket but finds himself drawn into Scullop's world when his new travelling companion, Flip, is snatched from inside the TARDIS.
So, while the Doctor uncovers the terrible secret of Trans-Gal's new tech, Flip battles to survive in a barren wilderness ruled over by the indestructible Lord Krarn and his pig-like servants, the Warmongers. And the name of that wilderness is 'Stevenage'.