When Diana Dragons meets a mysterious young man, at a bar, in Salam, Massachusetts; she is suspicious & wary of him, at first; but then, she is offered a drink; called The Devil's Ale, Diana is happy about the man, but; before she can say more, she is at her Satanist Friend, Serena's house; who, tells her she has someone she wants Diana to meet. Come to find out, it's the young man, from the bar! While Lucifer tells Serena, that she needs to come with him, she pleads for her soul, saying; she would sell her friend's soul to Lucifer, & while he agrees, Diana then; is on the run, from Lucifer, when, she meets The Winchester Brothers', who tell her of her fulfilling an ancient, dark prophecy; while she is angry, yet; stunned. While The Winchester Brothers' help her out, Diana is finally found by Lucifer, who will stop at nothing to have her. While she is saved by Lucifer, both, Diana & Sam, & Dean Winchester; are stunned. While she is told that she literally owes Lucifer her life, for saving her; twice, & that she has no choice, Diana is scared, yet; she knows she has a choice to make. Will Diana make the right choice, or; will she not, risking both, she & The Winchester Brother's lives'?