Teen idol Nam Hyeon-soo is presently in his thirties and act as a radio DJ. A young woman named Jeong-nam turns up and claims to be their daughter. She has a boy whom she claims to be the grandson of Hyeon-soo. The brother of Hyeon-soo proves via DNA tests their relation. This contributes to Hyeon-soo trying to prevent a scandal regarding him with kids"unknown" into the media.