A Good Man Goes to War (1) (S06E07)

Amy Pond has been taken hostage, prompting the Doctor to gather a formidable force for her rescue. As he and Rory journey through the cosmos, summoning favors and honoring commitments, their adversaries are orchestrating a devious snare. Meanwhile, locked away in Stormcage, River Song reflects on the inevitable – the day of the Battle of Demons Run has arrived, heralding the Doctor’s gravest challenge. Both factions will face significant losses, and River Song must unveil her deepest secret to the Doctor at this crucial moment.