A man and a woman take revenge desperately yet elegantly after being trampled on by enormous power.

A suspenseful revenge drama about a woman whose life was destroyed by the friends she trusted most. After making up her mind to take revenge on those who betrayed her, she returns to reclaim the life that was stolen from her.

"Promise, do you keep it well?" 'Tae-seok' makes a living on a daily basis" 'Soo-hyeon' can't keep up with her growing debt" 'Ji-yeon' keeps getting on the wrong path" The three people who are on the edge of the cliff Sweet whispers that cannot be rejected A contract with the devil with life as collateral! The moment you break your promise The endless curse unfolds!