Three former mafia members work at a construction company to avoid getting involved in the underworld again. But fates draw them back to the past when a gangster approaches one of them.

When Yoo-mi seeks out her mother's friend at a hotel to drop off her younger sister, she falls into unexpected mystery and horror.

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.