The drama is adapted from Penglaike's novel of the same name.Changle County, Fuzhou Prefecture, is a place where eunuchs from Sanbao go to the West to gather and train and serve the wind to open the foreign countries.Under the maritime ban, trade elsewhere was depressed, but Changle's business was booming.The prosperity and prosperity of the coastal coast has led to the rampant Japanese pirates near the sea. Pei Youan, the commander of the Shenji Camp who came here to buy firearms for treasure ships, was invited to patrol the sea together. Unexpectedly, he encountered a fierce naval battle - the Japanese ship besieged our merchant ships, and the family merchant ships of the folk fireworks craftsman Zhen Jiafu were also among them, and the two formed a relationship.In order to help Jiafu escape forced marriage, Pei Youan formed a contract couple with him.They quietly grew affection through mutual coordination, and finally got married after going through ups and downs.