In 1989, Tang Jun walked out of Yanda and encountered the huge wave of reform, opening up, and globalization. He did not choose to go with the flow, but took his life as a mark to find a way out for the ups and downs of the nation - learning to swim in the waves, forging giant ships in the wind, and finally identifying his own star map for the lost era. He is not only a trendsetter, a shipbuilder, but also a lonely and determined lighthouse in the dark sea.