A man named Woo-jin wakes up every day in a different body, regardless of age, gender, or nationality. His identity remains the same, but his physical appearance constantly changes, making it impossible for him to lead a normal life or maintain steady relationships. Due to this unique predicament, Woo-jin isolates himself from the world and works as a furniture designer. Using digital communication, he manages to create beautiful pieces without meeting clients face-to-face. Despite his situation, he occasionally finds solace and connection through his family and close friend Sang-baek, who know about his condition and offer unwavering support.

One day, Woo-jin meets a furniture store employee named Yi-soo and falls in love with her. Despite the challenges posed by his ever-changing appearance, he bravely decides to pursue the relationship. Initially, Yi-soo is puzzled and skeptical but gradually starts understanding his peculiar condition. Woo-jin's sincerity and deep emotions persuade her to accept him, despite the daily uncertainty of who he will physically be. However, as their bond deepens, they must confront numerous obstacles that test their trust and love. Ultimately, Yi-soo and Woo-jin must grapple with whether love can truly transcend the physical transformations that define Woo-jin's existence.