Six-winged angel Lucifer burns through her divinity to save her mentor, Luke, only for her younger sister, Shirley, to steal the credit. Her parents force her to surrender her divinity, and Luke condemns her to Purgatory for loving him. As she endures brutal torture, she witnesses him marry Shirley—who is also his student. Lucifer becomes a fallen angel and storms the wedding, but her parents ambush her and have her imprisoned. Then Shirley has the only maid who pleaded for her hanged. With nothing left to hold her there, Lucifer takes the hand of her former enemy, Aaron, Lord of Hell. She leaves the Divine Realm and becomes Queen of Hell. When the truth comes out, Luke punishes Shirley and returns Lucifer’s divinity, begging her to come back. She throws it into the lava right in front of him. He then uses blood from her relatives to cast the Bloodline Pact, forcibly summoning her back and trying to bind her to him forever. Lucifer would rather burn alive than stay. Aaron takes her hand, sharing the flames as they break the pact together. Reborn in Hell, she finally chooses the man willing to face death beside her—and leaves behind the cruelty inflicted on her in the name of love.
