Liu Huaqiang is just an ordinary delivery driver, shuttling through the streets and alleys every day. Despite his hard work delivering food, he often faces grievances, and customers' humiliation leaves him helpless with a full heart. After getting married, his brother-in-law also constantly subjects him to cynical remarks and looks down on him. He thought his days would just flow by as plain and uneventful as this, but unexpectedly, the renowned First Female God of War of Great Xia comes knocking on his door, and firmly and resolutely claims to be his older sister. Everything changes from this moment on.