Amy is kidnapped by the evil one-eyed Madame Kovarian and her military force and their allies The Headless Monks and gives birth to a baby girl named Melody and are being held captive at their secret base on the the asteroid "Demon's Run". The Doctor, Rory and four individuals whom owe debts to The Doctor, set out to rescue Amy. But, The Doctor soon learns Melody is half-Time Lord and Madame Kovarian plots to use Melody as an assassin to kill The Doctor and River Song appears and reveals to The Doctor, Amy and Rory who she is.