Doctor Who: Planet of the Dead - Synopsis

The BBC Press Office have released the synopsis on the first Doctor Who 2009 special:

PLANET OF THE DEAD - by Russell T Davies & Gareth Roberts

When a London bus takes a detour to an alien world, the Doctor must join forces with the extraordinary Lady Christina, in this one-off seasonal special. But the mysterious planet holds terrifying secrets, hidden in the sand. And time is running out, as the deadly Swarm gets closer.

Doctor Who: Planet of the Dead will broadcast on Saturday 11th April at 6:45pm on BBC One and new high-definition channel BBC HD.