Return to E-Space
En route to Gallifrey to return Romana to the High Council of Time Lords, the TARDIS passes through a strange phenomenon and ends up in an alternative universe called E-Space. Neither the Doctor nor Romana herself can calculate why the TARDIS scanner shows images of their planet when they have arrived in a verdant forest. It later emerges they have journeyed to this pocket universe through a rare space/time phenomenon known as a Charged Vacuum Emboitment.
Nearby is a small but sustainable civilisation of humanoids who live between a river and a grounded spaceship called the Starliner. They came to the planet, Alzarius, from Terradon and much of the focus of society is on repairing their craft to make it navigable once more. It is an oligarchy ruled by three self-selecting senior colonists knows as Deciders, who ensure the smooth running and order of their adopted world and lay particular store on technical ability. One of the brightest of the younger generation of colonists is Adric, who bears a Badge of Mathematical Excellence in recognition of his computational skills. However, his brother Varsh has rejected the regimented society of the Starliner and leads a band of rebels called Outlers, who steal harvested riverfruit and other foods to survive.