In the Goldenleaf Kingdom, Flynn Nightwalker, the renowned and formidable assassin, meets a tragic end at the hands of his treacherous comrades. In a twist of fate, Flynn's spirit inhabits the comatose body of Han Cheol, a former famous Esports player who had fallen into despair and thus attempted ending his own life. Determined to seize his second chance, Flynn vows never to blindly pledge his loyalty or trust to anyone again. However, he also carries the burden of fulfilling Han Cheol's long-held dream: to become the greatest gamer of all time as well as earn enough money to rescue his family from the clutches of overwhelming debt.

Guided by his assassin instincts and honed skills, Flynn embarks on a journey to conquer the world of gaming. With each step, he faces formidable opponents, intricate gaming challenges, and the need to navigate the complexities of the eSports industry. Along the way, Han Cheol's experiences as an assassin begin to merge with his gaming prowess, granting him an unconventional advantage.

As he strives to achieve greatness, Flynn must confront his past, reconcile his conflicting identities, and uncover the truth behind his reincarnation. Will he succeed in becoming the unrivaled gaming legend he aspires to be, or will the shadows of his assassin past consume him once again?