Big is about 18-year-old Kang Gyung-Joon’s (Shin Won-Ho) spirit suddenly finds itself in the body of 30-year-old Seo Yoon Jae (Gong Yoo) . Seo-Yon-Jae is a successful doctor and engaged to high school teacher Gil Da-Ran (Lee Min-Jung). Gil Da-Ran just so happens to be the teacher of 18-year old Kang Gyung-Joon. More problems ensue when 30-year-old Seo Yoon Jae falls in love with another woman (Bae Suzy).
- Drama: Big
- Revised romanization: Big
- Hangul: 빅
- Director: Ji Byung-Hyun, Kim Sung-Yoon
- Writer: Hong Jung-Eun, Hong Mi-Ran
- Network: KBS2
- Episodes: 16
- Release Date: June 4 – July 24, 2012
Da-Ran (Lee Min-Jung), currently preparing to take for her teacher’s exam, goes to a wedding hall to deliver a bouquet. When she hands over the bouquet Da-Ran discovers the bride is a friend of hers. Da-Ran also makes the uncomfortable realization that she wasn’t invited to her friend’s wedding. She stays at the wedding and gives money to the couple as a wedding gift. Da-Ran then eats lunch at the wedding alone.
She then receives a phone call that the bouquet was delivered to the wrong bride and she needs to get it back. Da-Ran attempts to catch the bouquet at the end of the wedding, but bumps into a man named Yoon-Jae (Gong Yoo). Due to the bump, Da-Ran falls down the stairs and is hospitalized. As fate has it, her doctor at the hospital is Yoon-Jae, the man she bumped into at the wedding. Their relationship develops into a romantic relationship and one month later they plan to get married.
Now, Da-Ran works as a temporary teacher at a high school, while preparing for her exam to become a teacher. When she goes to work on the bus, she listens to her own story that she wrote in to the radio station. Da-Ran gets off the bus and a young man Gyung-Joon (Shin Won-Ho) gets off at the same bus stop. Da-Ran mistakenly believes the young man likes her. It turns out that Da-Ran took his umbrella on the bus and Gyung-Joon is a student at the high school where she works. High school student Gyung-Joon lived in the United States with his mother, but after his mother died came back to South Korea.
- Big Torrent Files takes over the KBS2 Mon & Tue 21:55 time slot previously occupied by “Love Rain” and will be replaced by “Haeundae Lovers” on August 13, 2012.