Gyeo Ul witnesses her husband Yu Jin having an affair with her friend Ae Ra who becomes the target of her revenge. It causes Gyeo Ul to lose her eyesight and suffer from lock-in syndrome out of shock. Gyeo Ul gets involved with Se Rin, an heiress who owns everything. Se Rin is an arrogant and cold-hearted woman who looks down on people and does not hesitate to take revenge on whoever stabs her in the back.