Watch Lucid Dream

Enraged by her broken engagement, Yoo-ra visits Yeon-hee and puts drugs in her tea cup. As Yeon-hee loses consciousness, she takes her somewhere...

After learning that Yeon-hee is a girl, Soo-hyun realizes she is Young-dae in his dreams. The two meet and put the pieces of their dreams together.

Soo-hyun threatens Yeon-hee, mistaking her as Moon-jae in his dream. Yeon-hee is disappointed that he doesn't recognize her, and decides to leave him.

Soo-hyun tries to find the girl he saw in the lobby without knowing it is Yeon-hee. Yeon-hee has a gut feeling that her nightmares are related to him.

Soo-hyun gets stuck in an elevator with Yeon-hee who is disguised as a man. Yeon-hee falls asleep and leans on him, and he has the urge to kiss her.

At a company party, Soo-hyun sees drunk Yeon-hee (disguised as a man). As he helps her walk, his fiancee, Yoo-ra, gets the wrong idea and slaps her.

Soo-hyun is surprised to see Yeon-hee's painting that reminds him of his dream. Yeon-hee disguises herself as a man and starts working at his company.

Every night, Soo-hyun becomes 'Sang-baek' in his dreams and falls in love with someone. Yeon-hee disguises herself as a man and joins an event.