Season 9 of the supernatural series begins with the fallout from heaven's angels descending to earth. Sam (Jared Padalecki) and Dean (Jensen Ackles) suddenly find themselves living in a world that is now inhabited by thousands of powerful, angelic beings, some of whom want them dead. The brothers then embark on a journey to reopen the gates of heaven. Meanwhile, Castiel (Misha Collins) struggles to survive without his powers and embarks on living as a human; Crowley (Mark Sheppard), the King of Hell, is kidnapped by Dean in order to find demons on earth; and Abaddon (Alaina Huffman), the Knight of Hell, reappears with plans to take over hell once and for all.

This release from the sitcom Big Bang Theory includes every episode of the show's eighth season, following the daily misadventures of a group of socially awkward and terminally endearing scientists.