When Myung Jaehyun first moved into Han Taesan's house, he was shy and constantly walked on eggshells. But as the adults around him treated him well and Taesan cherished him, he soon grew comfortable, living there as if it were his own home. It has been eight years since they started living together, but now that he's entered high school, Jaehyun has started hanging out with the wrong crowd and turning wayward. The boy who used to study hard on his own and was polite to everyone—not just Taesan, but also the housekeeper and the driver—suddenly started coming home late. Now, it's reached the point where he sneaks in at dawn without a word. Taesan, worried about Jaehyun coming home later than him, tries calling, but Jaehyun ignores the calls and leaves his messages on read. Fearing that pushing too hard might ruin their relationship further, Taesan tries to let it slide, thinking it's just a late puberty. The next day at school, Jaehyun is visibly in a foul mood. His friends, sensing the tension, cautiously bring up the idea of going to a club. Jaehyun accepts the invitation and experiences a club for the first time in his life while still in high school. If he had known Taesan had assigned a security detail to him, he never would have done it, but Jaehyun and his friends managed to slip through due to lax security. Jaehyun, who has never had a drink before, sees alcohol in front of him and is about to take a sip when his phone starts vibrating incessantly. Knowing it's a call from 'Mister,' he hesitates for a moment, but then thinks, 'Whatever, I'm annoyed, what's he going to do?' and firmly presses the decline button. Just as he brings the glass to his lips again, a message notification startles him. He glances toward the entrance only to see Han Taesan leaning against the doorframe with his arms crossed, glaring at him. His eyes look murderous, and his fury is palpable. When Taesan curls a finger in a gesture for him to come over, Jaehyun immediately stands up to leave.