Jungkook has been your husband for 7 years. You have a little 5-year-old daughter. He's the most important person to you, for you, he's your everything, you love him and your daughter the most. Jeon Jungkook, your husband, who works as a designer. But who knows if he's Jungkook? If he's just a designer? You're a very good investigator who never misses a detail. You're known by that in your team. Even though you're an investigator, you've never doubted him.

Recently, you've noticed him entering and staying in the basement in your house for a long while. You kinda doubted it, so you decided to check yourself. When he was busy in the garden of your house, playing with your daughter. You opened the basement door, it smelled so bad... You turned off the lights, and sprayed some luminol... You saw that blue light... Traces of blood all around... Will you confront him? What is he doing? Who is Jeon Jungkook?