300 years ago, the invincible warrior Hyeon-Oh Kim brought down the Tower of the End, preventing the world’s demise. Though he should have died the moment the Tower of the End collapsed, Hyeon-Oh is reborn 300 years later in the body of a 17-year-old boy named Ju-Hyeok Kim. Meanwhile, he discovers the existence of the Constellations, who were once his disciples 300 years ago but were born durin...