One day after a normal day at work berating his underlings, Mark Thorne ends up in the TARDIS. He notes the presence of the Doctor and Turlough before he loses consciousness. When he wakes up, he leaves the TARDIS to find himself on an alien planet. Aliens, the Shev, are threatening the Doctor and Turlough. Mark heads in the other direction and meets two Shev, Trawets and Syhr. For some time he cooks for them, but then they make him part of their hunt. Mark runs away, heading for the TARDIS, into which he can see the Doctor and Turlough enter, but they don't know he has left and the TARDIS takes off, leaving Mark behind.