Her father Eun Jin-sub had an affair and left their family for the other woman, and shortly after her autistic brother died and her mother Han Kyung-hye went blind.

Knowing that Jin-sub's new wife Shim Soo-jung is a popular actress, Ah-ri-young works her way up the ranks until she earns enough cachet in the TV industry.

Then she writes a script that's a thinly veiled autobiography of her father's affair and its aftermath, and casts the unsuspecting Soo-jung in the role of the blind mother to make her feel guilty.

To complete her revenge and cause the maximum amount of pain, Ah-ri-young also plots to steal the fiancé of her half-sister Eun Ye-young, the gentle-natured Lee Joo-wang.

But Ah-ri-young finds herself falling in love with Joo-wang for real, and she eventually realizes that there is more to life than hatred and learns the true meaning of forgiveness.