The Leisure Hive On the radioactive surface of Argolis stands the Leisure Hive where the Doctor and Romana arrive, looking for a holiday. Instead they are caught in a plot involving the tragic Argolin and their enemies, the Foamasi. Meglos The Savants and Deons of Tigella are locked in conflict over control of the ancient Dodecahedron, and need the Doctor's help. But Meglos, the last Zolfa-Thuran, seeks the power of the Dodecahedron for himself. Full Circle Trapped in the E-Space universe, the TARDIS brings the Doctor and Romana to Alzarius, where the Deciders aboard a crashed starliner keep terrible secrets. Mistfall is coming and the Marshmen will rise...