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A genius Noh Gojin ignores death threats. His secretary Lee Sina gets deadly ill and dreams revenge.

Sina takes revenge on Gojin, but gets flabbergasted when he loses his memories from a car accident.

Sina pretends to be Gojin's fiancée to take revenge and finds tormenting him rather enjoyable.

Sina deceives Gojin's friend Segi and enters his house. Kang Min, who ran over Gojin, visits him.

Gojin deceives everyone by faking his amnesia. On the night of the accident, Gojin saw the culprit.

Noh Gojin hires the best private detective "John" to investigate. Sina keeps taking revenge on him.

After witnessing a young man's car accident, Sina accepts her deadly fate and stops taking revenge.

It turns out Sina's cancer was misdiagnosed. It is also revealed that Gojin does not have amnesia.

After they kissed, Go Jin and Si Na's hearts flutter. Go Jin speaks rudely to Si Na because of Soo Yeong.

The person who Gojin saw on the night of the accident was Oh Segi. Gojin's feelings for Sina grow.

After seeing Sina's will, Gojin realizes he loves her. Segi conspires to drive Gojin out of Gotop.

Gojin and Sina's romance begins. Gojin firmly believes Sina to be terminally ill driving her crazy!

Sooyeong challenges Sina to confess that Gojin was her first love. Gojin faces a crisis due to Segi's scheme.

Gojin overcomes the crisis, however the doubts on Segi's actions still remains. A surveillance camera shows another man when the accident happened.

Gojin sincerely apologizes to the people around him and vows to protect them. Sina roots for Gojin.

Gojin catches the culprit, and Gojin and Segi reconcile. A year later, Sina and Gojin are newlyweds.