A male student’s body is found at school. Authorities assume that the student killed himself in a fall. Other students at the school hold a trial to uncover the truth behind his death.

Seo Yi-Kyung ambitiously wants to build her own empire. She is calm and also passionate. She doesn’t believe greed is a sin. Park Gun-Woo possesses good looks and comes from a wealthy family that runs a large company. Seo Yi-Kyung is his first love and he is still in love with her. Lee Se-Jin comes from a poor background. She desperately wants to escape from her situation.

Eun Sang-Chul (Lee Sung-Jae) and his four children encounter difficulties after the sudden death of his wife. Then, a suspicious housekeeper named Park Bok-Nyeo (Choi Ji-Woo) appears. Because of the housekeeper, Eun Sang-Chul and his children faces various cases and family members who hate each other begin to experience love and reconciliation.

Lee Young-O is an excellent neurosurgeon with zero sympathy. One day, he becomes involved in bizarre patient deaths. He also falls in love and recovers his humanity.

Mary Stayed Out All Night is a 2010 South Korean romantic comedy television series, starring Moon Geun-young, Jang Keun-suk, Kim Jae-wook and Kim Hyo-jin. It is based on the webcomic of the same title by Won Su-yeon. It aired on Korean Broadcasting System from November 8, to December 28, 2010 on Mondays and Tuesdays at 21:55 for 16 episodes.

Sang-Tae is left with his two children after his wife passes away. Since that time, he lives with his two kids and parents-in-law. He works as a marketing team leader for a fashion brand.

Mi-Jung works as an assistant manager at the same fashion company. 3 years ago, her husband had an affair with her friend and left her. She couldn’t tell her kids the truth about their father and lied that their father went to work in America. To this day, the children still believe that their father is in America.

Sang-Tae and Mi-Jung never thought about falling in love again, but they fall in love with each other.