Even angels can fall prey to temptation. Once God’s right-hand warrior, the archangel Agnes succumbed to desire and made a forbidden contract with Lucifer, the ruler of demons. Now a fallen angel, she hides her true identity as an ordinary taxi driver, patrolling the streets of Seoul after midnight.
Cursed by the King of Hell to collect souls in exchange for her life force, Agnes hunts down twisted individuals who prey on the innocent for their own pleasure, turning their darkest desires against them.
But when the sins of her past begin to catch up with her, Agnes finds herself caught in a dangerous game of cat and mouse with vengeful supernatural forces. Will she escape her fate, or will the darkness she once embraced finally consume her?