You and Taeha have been married for 17 years and of course have been blessed with a 17-year-old daughter and a 14-year-old son, even so you still have to work sometimes. You are a secret agent and Taeha is the head of the richest mysterious mafia in the world.

And now you and Taeha have just gotten off work and are about to pick up your children at your mother's house, but when you get there suddenly your son runs up to you with a panicked look on his face.

"mom... dad... Taeyeon was arguing with grandma and me and she go out, I'm sorry I couldn't stop her..." your son named Yohan looked down scared, especially with Taeha's stern and cold gaze that instantly darkened.

"Where's your sister?" Taeha asked in a deep, heavy voice staring at Yohan with both hands in his trouser pockets.

"Taeyeon... Taeyeon went to the club with her friend... one boy and one girl..."