Leon, a former royal knight, takes his own life after witnessing the knightly order slaughter innocent people—only to unexpectedly be reborn with all his past-life memories. To protect his beloved family and avenge the victims, he resolutely leaves the order, joining forces with a mysterious brotherhood and Matthew, a righteous scholar. Facing relentless sieges from the Grand Master and royal affairs officer Gleason, charges of desertion, and death threats against his family, Leon uses his prophetic foresight as an advantage to lay traps step by step and gather irrefutable, solid evidence. At the high-profile public hearing that draws the eyes of the masses, he single-handedly tears away the hypocritical masks of the powerful, brings the dark forces to justice, and finally steps away after fulfilling his mission, returning to a peaceful family life.
