Moon in the Day

Jun-o is the top star who is loved as the Nation's Boyfriend. To cover up his scandal, he shoots a public advertisement with the firefighters. At the set, he meets Firefighter Young-hwa who is committed to her job. An accident occurs during the break, and a mysterious being that has been following Young-hwa goes into Jun-o. And this being has only one goal, killing Young-hwa.

As soon as Jun-o gets up, he goes to Young-hwa and tries to kill her. However, he fails to do so because of a mysterious shield that protects her. To get past the protection and seek the chance to kill her, he decides to get close to her. Young-hwa finds Jun-o odd, but she tries to understand him, thinking he’s suffering the trauma from the accident.

Jun-o and Young-hwa are kidnapped by a bunch of thugs. Jun-o beats them up while Young-hwa is unconscious. Young-hwa doesn’t remember what happened, but she gets suspended for being involved in a violent incident. Jun-o asks Min-o to make Young-hwa his bodyguard so that they can stay close. Meanwhile, Young-hwa gets hit by a car and starts dreaming again.

Young-hwa is hospitalized and has a dream about her previous life. Do-ha lets Han Ri-ta stay at his place as a maid. Ri-ta realizes that Do-ha has been feeling guilty about the lives he took during the war. Finally, Young-hwa wakes up, and it seems like she remembers her dream this time. Jun-o gets confused and becomes hesitant about killing Young-hwa.

Min-o asks Young-hwa to stay by Jun-o's side around the clock for safety. So Ri-bu and his aides suspect Han Ri-ta's true motives, as they find out her identity. Young-hwa is further assured of seeing Jun-o in her dreams and tries to make sense of his familiarity. Meanwhile, Monk Hae In goes to Jun-o’s company to meet Young-hwa.

Because of the talisman, Do-ha gets separated from Jun-o’s body and reveals himself to Young-hwa. From Young-hwa’s reaction, Jun-o notices that she sees their past in her dreams. Young-hwa doesn’t know what she’s going through, and she goes to see the monk who put the talisman on Jun-o. Meanwhile, Jun-o tells Young-hwa about their previous life.