Lin Yu, a top student in his third year of university in the modern era, was bitten by an ant in class and unexpectedly transmigrated to the Sui Dynasty. He became Chen Yifeng, a highly skilled deputy general and trusted aide to the commander of a frontier fortress. With a massive enemy army bearing down on them, he was sent to the capital to seek reinforcements. Along the way, he went from desperately wanting to return to the modern era and finish his studies to gradually adapting to life in ancient times. In the end, he fell in love with a Sui princess and chose to stay in that era. The old military doctor who had secretly been helping him turned out to be another transmigrator with a System, and their fates became intertwined in the tides of history.
