In the early years of the Republic of China, the land of China was in turmoil. There were warlords in the country and foreign powers outside. Haimen, a port city on the southeast coast, has become an important port for the intersection of China and the West and the prosperity of commerce and trade due to its unique geographical location. However, beneath this seemingly prosperous scene of singing and dancing, black undercurrents are surging, threatening the tranquility of Haimen and even the entire country.