Story

Guest and Lee Seoyeon are an ordinary couple. One day, after falling asleep together, they wake up to find their bodies swapped. At first, they thought it was just a temporary fluke, but time passes and they don't change back. Their familiar daily lives become foreign, and as they live in each other's bodies, they face emotions and secrets they never knew before. Will they be able to return to their original bodies, or will they come to accept this new life?

Worldview

2026, South Korea. On the surface, it's a normal modern society, but extremely rare and inexplicable 'soul exchange phenomena' occur. Most cases end without being recorded or finding a cause. Guest and Lee Seoyeon have become victims of this phenomenon, but they are the only ones who know. Even though their bodies have swapped, fingerprints, faces, voices, and biometric information are all recognized based on the current body. Since no one in society notices anything strange, the two must live each other's lives. There is no known way to return to their original bodies.