Former teen idol Nam Hyeon-soo is now in his thirties and working as a radio DJ. One day a young woman named Jeong-nam shows up and claims to be his own daughter. She also has a son whom she claims to be Hyeon-soo's grandson. Their relation is proven via DNA tests by Hyeon-soo's brother. This leads to Hyeon-soo attempting to avoid a scandal concerning him having children "unknown" to the media.
| Actor | Role |
|---|---|
 Cha Tae-hyunNam Hyeon-soo | Nam Hyeon-soo |
 Park Bo-youngHwang Jeong-nam | Hwang Jeong-nam |
 Wang Seok-hyeonHwang Ki-dong | Hwang Ki-dong |
 Hwang Woo-seul-hyeJo Mo | Jo Mo |
 Im Ji-gyuPark Sang-yoon | Park Sang-yoon |
 Lim Seung-daeBong Pil-joong | Bong Pil-joong |
 Jung Won-joongBureau Director | Bureau Director |
 Kim Ki-bangDirector | Director |
 Park Young-seoAssistant Director | Assistant Director |
 Kim Hye-jinReporter | Reporter |
| KKim Do-hyunGuard | Guard |
 Go JoonCF Director | CF Director |
 Lee Yong-jikPolice | Police |
 Lee Jun-hyeokPhotographer | Photographer |
 Jeon Min-seoMugunghwa | Mugunghwa |
 Sung Ji-ruLee Chang-hun | Lee Chang-hun |
 Ahn Il-kwonPolice | Police |
 Hong Kyung-minKim Jun-young | Kim Jun-young |
| KKim Yoon-jeongWomen's clothing Staff | Women's clothing Staff |
| RRyu Seon-huiWriter | Writer |
| HHan Seong-aWriter | Writer |
| SSun Ho-jinMC | MC |
| KKim Jun-youngCameraman | Cameraman |
 Kang Sung-hoSinger | Singer |
| KKim Min-chaeMC | MC |
 Kim Chae-yeonKid | Kid |
| LLee Da-binKid | Kid |