In the 22nd century, Leo soul-transmigrates to a parallel world set in the 8th century, becoming the foolish second son of a baronial family. He enjoys a life of wealth with servants at his beck and call. However, just as he begins to settle into this comfortable life, his father and brother encounter bandits while transporting goods; his brother dies, and his father is left a vegetable after surviving. Reluctantly, Leo must take on the family responsibilities and embark on the path of resurgence.