Hong Joo's dreams always come true. She dreams of hugging a man whom she has never met and is shocked at her actions. On the night of Valentine's Day, she is worried about her mom and hurries home to see her.
Jae Chan has a dream about Hong Joo. He feels that he must prevent the events of his dreams from actually happening and tries his best to make sure that the accident never happens.
Jae Chan finds out that Hong Joo has precognitive dreams on a regular basis and visits her after dreaming of his younger brother, Seung Won, becoming a murderer.
Jae Chan and Hong Joo meet before the situation becomes irreversible. Before things get ugly, Jae Chan gets to Seung Won, and Hong Joo improvises so that things turn out differently from her dream.
Woo Tak has a precognitive dream that shows Hong Joo getting injured. He brings Jae Chan along to where it actually happens, so Jae Chan is able to prevent the injury from happening.
As Jae Chan, Woo Tak and Hong Joo begin to alter the future by preventing the events from happening, Hong Joo gains hope that perhaps her fate isn't sealed.
To prevent the case, Jae Chan asks Hong Joo to remember the details of incident if anything happens, so that he can find her after seeing in his precognitive dream.
Jae Chan arrives to the scene of the crime to find out Woo Tak has been stabbed. He goes after Dae Hee and manages to arrest him. Jae Chan works hard to make sure that Dae Hee is prosecuted for his crimes.
Hak Young is a friend of Woo Tak, so Woo Tak convinces Hak Young to turn himself in. Jae Chan has to prosecute Hak Young, but there's not enough evidence to do so.
Hak Young is released and set to be investigated without detention. Thanks to a comment left by a netizen, Hong Joo figures out the cause of the strange markings on the floor of Yoo Su Kyung's apartment.