Kim Seokjin had it all. He had handsome looks, an angelic voice, a promising career, a supportive family, caring friends and last but not least a loving boyfriend. But everything starts to go downhill when he finds out that he doesn't have the starring role in his boyfriend's heart. And if there's anything that Seokjin hates a lot, it was playing a supporting role. 

His parents were detectives. The best detectives in the whole city. But now that they were gone, the case was left unsolved, so their son decided to take care of it. But remember... If you play with fire, you'll get burned. He thought he was the good one, but soon everything will turn upside down.