Name: Big / 빅
Director: Ji Byung-Hyun (지병현)
Writer: Hong Jeong-Eun (홍정은), Hong Mi-Ran (홍미란)
Genre: Romance, comedy
Broadcast Network: KBS2
Airing Dates: 2012/06/04
Broadchasting Days and Time: Monday, Tuesday 21:55
Gong Yoo – Seo Yoon Jae / Kang Gyung Joon
Lee Min Jung – Gil Da Ran
Bae Suzy – Jang Ma Ri
Jang Hee Jin – Lee Se Young
Baek Sung Hyun – Gil Choong Sik
18-year-old Kang Gyung Joon’s (Gong Yoo) spirit suddenly becomes transplanted in the body of 30-year-old Seo Yoon Jae. Seo Yoon 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).
Source : Miss A Facebook fan page