From a mountain peak in South Korea, a man plummets to his death. Did he jump, or was he pushed? When detective Hae-joon arrives on the scene, he begins to suspect the dead man’s wife Seo-rae. But as he digs deeper into the investigation, he finds himself trapped in a web of deception and desire.

Amid a coup, a North Korean agent escapes south with the country's injured leader in an attempt to keep him alive and prevent a Korean war.

A gang of clowns is hired by an unpopular king to serve as propagandists who fabricate positive rumors and stage miracles to improve his personal image.

Despite the close bonds among fellow defectors, Cheol-jun—a young North Korean defector—felt isolated while hiding his gay identity. Finally, he takes his first step into South Korea's vibrant gay community and forms close ties after meeting Yeong-jun at a casual gathering. Yet, a trivial misunderstanding shatters these fragile bonds.

One day, 25 years ago, missing Chun-bae's letter is delivered to his cousin, Jjang-goo. The letter contains Chun-bae's lover, Bok-soon, and other people's letters. Jjang-goo finds Bok-soon to deliver the letter and meets class president Jang together. The three people recall their memories from 25 years ago, and eventually faced the person who sent the letter. Through that, the tangles begin to unravel.