After her husband was laid off and left the house, Yuri struggled as he failed to find new work and instead drowned himself in alcohol every day. Her son tried to protect his mother, but the father's domestic violence continued relentlessly, causing the son to shut himself away emotionally and isolate in his room. One day, the son secretly installed hidden cameras inside the home to monitor his parents' lives. Driven by his deep love for his mother, he ultimately commits an unforgivable act.