Doctor Who - Planet of the Dead is a science fiction film not set within the Solar System which was released in 2009 and is directed by James Strong.
The Doctor boards a bus as it goes on its normal journey through London. However this journey is different, it takes a wrong turn and goes through a wormhole to another planet. The planet is a desert planet and they are the only ones there. Lady Cristina de Souza takes it upon herself to be the defacto leader of the group giving orders. The Doctor just sits back and listens to what Cristina has to say.
The Doctor wanders off to do his own investigation where he meets a group of Trillobites who tell the Doctor that the planet used to be a thriving, lush planet before the stingray creatures arrived. The stingrays devour the planet and then move on to the next planet. There`s nothing that can be done for this planet except escape. The Stingrays are metallic and when they travel, they create a time space portal and their next target is Earth.
On Earth, Capt. Magambo as head of U.N.I.T. has set up a cordon around where the bus disappeared and are working out what is going on with their chief scientist Malcolm Taylor. During UNITs investigations, Malcolm comes up with his own measurement which he calls a Malcolm.
Back on the Planet of the Dead, the Doctor has got what he needs and fixes the bus so that it can take off and return to Earth, closing the portal and preventing the Stingrays from coming to Earth. Back on Earth Cristina is arrested but the Doctor takes pity and releases her from her cuffs so Cristina is able to escape the police.