After a harrowing car accident that defies the odds of survival, Han Si-On finds himself once again at the crossroads of fate, quite literally. Miraculously walking away with his life, he faces the daunting task of navigating a life he’s all too familiar with—due to a cryptic deal that traps him in a cycle of regressions. His mission? A seemingly impossible feat of selling 200 million albums, a goal dictated by the devil himself. With each regression, Han Si-On returns to the age of 19, burdened with the knowledge and memories of countless lives lived, all aimed at achieving a singular, elusive goal.