After arriving in depression-era New York, Dalek Sec and the rest of the Cult of Skaro set about combining Dalek and human DNA, attempting to create a new race of Daleks that could never be defeated.

As a test subject, Sec himself absorbed the human Mr Diagoras, which provided him with a new, fully mobile body, meaning he could live outside his protective casing. However, the other members of the Cult became distrustful of their leader’s new amalgamated form and their plans rapidly went awry…