In the 32nd Century, the Doctor finds himself on a planet piled high with discarded computer technology. Picking over these remains are an army of Scandroids, a collection of unsavoury, illegal Data Pirates and a team of researchers from the mysterious Lonway Clinic. This is a world of organic-digital transfer and 'personality surgery' which the Doctor finds disturbing enough, until something far more deadly starts to emerge.

Earth, 1974. An innocent phone call. Okay, it was a wrong number, but there can't be any harm in that. Can there?