Delivery worker Finn Gale transmigrates to ancient times as a foolish man, and is taken good care of by his kind sister-in-law Yara Sterling. After being injured by a village bully, he accidentally activates the Divination System, which allows him to predict opportunities and dangers three times per day. With the system, Finn grows wealthy through hunting, protects Yara from bullying, exposes and kills Village Chief Quinn the Elder who murdered his father and brother. He slays a tiger single-handedly and becomes the Tiger-Slayer Finn, is elected as Village Chief, leads villagers to divide land, train troops and escape poverty. He assists the government in suppressing bandit alliances, only to find Yara Sterling has been abducted by the mysterious Black Dragon Guard. Finn swears to do whatever it takes to rescue his lover.
