The Good Doctor

On the planet of Lobos, the Doctor halts a violent war between the native Loba and human colonists. The TARDIS crew departs -- only for Ryan to discover he's left his phone behind. Again. Upon returning, the Doctor finds that the TARDIS has slipped hundreds of years into the future -- and that something has gone badly wrong. The Loba are now slaves, serving human zealots who worship a figure known as The Good Doctor. It's time for the Doctor to f...