A famous psychology professor was killed under the motif of the murder game in the novel. But a young writer Han Joon conceals the killer for immediate success. As a result, Han Joon, the original author of the novel, is swept away by media and public opinion due to copycat crimes, and his life is turned upside down by sudden success. A month later, Han-jun received a threatening letter from Nuance that Han-jun knew the secret of Han-jun with a photo of the mysterious woman murdered, and Han-jun met the woman in the photo with Jeong-hyun, a young woman who helped him succeed.

North Korea, facing international sanctions, seeks assistance from a Hungarian NGO to build churches in Pyongyang as a way to bypass the sanctions. The NGO proposes organizing a revival meeting with international Choir organizations, leading the Ministry of 5 Securities to apprehend believers. The "Victory Orchestra," a replacement ensemble, is actually composed of underground Choir members. As they sing hymns openly for the first time, their true identity as underground believers is revealed, creating moments of laughter, tears, and emotion.