Cheolsu Saves the World

A colossal asteroid is hurtling toward Earth, and humanity’s desperate attempts to intercept it have ended in total failure. As the massive celestial body strikes the planet, civilization is instantly wiped out, bringing life as we know it to a devastating and irreversible end. The world falls into ruin, leaving behind nothing but the ashes of a doomed existence. Yet, amid this apocalyptic aftermath, an ordinary Korean office worker named Cheol-Su is inexplicably granted a miraculous second chance. Thrust backward through time, he awakens before the catastrophe has occurred, burdened with the knowledge of humanity's impending extinction. Now, this entirely unremarkable man must find a way to prevent the disaster from ever unfolding. Armed with nothing but his memories of the future, Cheol-Su faces an impossible dilemma: can a single, average person truly alter the fate of the entire world, or is he destined to watch everything burn all over again?