Iron Cavalry Breaks the Owl

Modern special forces soldier Qin Yue and his elite squad transmigrate to the fictional Great Yin dynasty, where eunuchs hold power and Japanese pirates run rampant. The squad rescues villagers, captures a eunuch, and uncovers corruption at court.

Qin Yue resolves to purge the corrupt. He forms the "Sea-Quelling Battalion," gradually building it from a county-level force into an elite provincial army tasked with suppressing pirates and rooting out traitors. After earning repeated merits, he wins the emperor's secret approval and is granted imperial envoy authority. With its mission officially sanctioned, the Sea-Quelling Battalion helps the emperor eliminate the eunuch faction and secure the coast. When the mission is accomplished, Qin Yue is enfeoffed as the "Prince of Sea-Quelling," gaining power throughout the court.

Yet the squad never forgets its original purpose. While inspecting the coastal defenses, they discover a route back home. In the end, they collectively give up their riches and glory to return to the modern world, leaving behind only their legend in this other world.