Cha Young Jin is the first female to ever work as a bodyguard in the Presidential resident, Chungwadae. Young Jin and Yoo Gwang Pil work as bodyguards assigned to watch over the president's son, Kang Soo Ho. They are assigned to guard Soo Ho for 15 months.


Cast
* Chae Rim as Cha Young Jin
* Lee Jin Wook as Kang Soo Ho
* Lee Jong Hyuk as Yoo Gwang Pil
* Choi Ja Hye as Jung Yoo Min

Extended Cast
* Lee Duk Hwa as President Kang / Kang Min Gook
* Lee Kyung Jin as First Lady Shin Ok Hee
* Shin Eun Jung as Kang Soo Ri (Soo Ho's sister)
* Im Hyun Sik as Cha Il Sang (Young Jin’s grandfather)
* Oh Kwang Rok as Cha Gwang Soo (Young Jin’s father)
* Kim Si Hoo as Cha Young Gu (Young Jin's brother)
* Kim Hye Ok as Mrs Oh Mi Ja
* Kim Yoo Jung as Yoo Kkot Nim
* Park Ha Sun as Seo Eun Young
* Go Myung Hwan as Kim Byung Wook
* Ma Dong Seok as Pyo Chul Ho
* Lee Gun as Nam Do Woo
* Lee Yeon Doo as Go Ki Ja (Eun Young's best childhood friend)
* Ryu Jin as Lee Soo Hyeon (cameo, ep16)
* Han Go Eun as Cha Song Joo (cameo, ep16)