The Crystal Bucephalus is a future restaurant patronised by the highest of society, projected back in time to sample the food and drink of long gone eras. However, when a notorious kingpin is slain in the Bucephalus, the Doctor, Tegan and Turlough are immediately suspected and arrested. In order to prove their innocence, they must find the real perpetrators, and in the process uncover a conspiracy 5000 years in the making.
