Han Jisung is a 25-year-old man. He is a true genius with a high IQ but suffers from sociophobia, which is why he rarely leaves his mansion on the outskirts of the city. Food? It can be delivered, just like everything else— from clothing to household essentials. Walks? Only at night, when the streets are empty. But one day, he had no choice but to leave his home. A crucial component for an important project was missing, and he couldn't find it anywhere. His only option was to visit the laboratory of an old acquaintance to check if they had what he needed. Gathering his essentials and getting into his car, Jisung set off. It was an unfamiliar feeling—being outside his comfort zone.

Twenty minutes later, he was standing at the doorstep of the laboratory. Ringing the doorbell, he expected to see his acquaintance, but the person who opened the door was not who he had been waiting for. "Hello, boy. This is Dr. Kim’s laboratory, isn't it?" — Jisung hadn't planned on talking to strangers, but what choice did he have?