Smith is a secret associate of Ratcliffe, the leader of a group of fascists, reporting to a Renegade battle computer, which also uses a schoolgirl as its eyes and ears. The Doctor has the Hand buried in a local cemetery as a ruse, but it is soon unearthed by Ratcliffe, tipped off by Smith. Imperial Daleks arrive to seize it from the Renegades, but the Doctor and Ace defeat them and destroy their transmat. Anticipating a siege, the Doctor has Gilmore fortify the school while he disables the Renegade "time controller", leaving his calling card and fleeing with Daleks in pursuit, returning to the school just as the Imperial Daleks land. After losing the initial battles, the Imperials eventually defeat the Renegades, wiping out all but a Supreme Dalek, allowing Ratcliffe and Smith to escape with the controller, pursued by the schoolgirl, who kills Ratcliffe.