Yan Yangyi and Bao Hulu strayed into the strange Underworld Town, where they can only enter but cannot leave. Anyone who leaves without authorization will die mysteriously. Although Yan Yangyi doesn't believe in the horror legends all over Yin-Yang Town, he frequently encounters strange things. Will he be able to survive time after time? What was even more unexpected to Yan Yangyi and Bao Hulu was that under the curse, the spooky town has an amazing secret behind it...

In 11th century China, the Emperor Renzong reigns his country poorly, neglecting state affairs while the government sinks into corruption and war rages at his borders, whose only protection left is the famous Yang clan. However, when the last man of the family falls, leaving the country open to its invaders, the clan’s formidable women take up arms to lead the army to victory and seek vengeance against corrupt officials.

On an old barge moored close to a small village inhabited by old people and children, live young Wang Wang and his grandfather. The latter is immensely fond of the local doctor, Ms. Bei, who keeps prompting him to buy her a ring as proof of his good intentions. Wang Wang attends the local school, but, in the absence of maternal authority, with great reluctance. Then, one night, a young pregnant woman is discovered hiding on the boat, ready to give birth. With the arrival of her little baby girl, the young mother, already used to her river accommodations, opts to stay with them. Life on the barge is no longer the same. Wang Wang feels the stirring of adolescence and an Oedipal attraction to the young woman; the grandfather is diagnosed with dementia and and is warned that its first signs could soon manifest themselves; and the new young mother keeps a bag whose contents will later reveal a dark secret. Three people at a crossroads in their lives.

In the early years of the Republic of China, the corrupt Qing government is overthrown by the revolution, and the trend of democratic progress rapidly sweeps across the entire land. However, aside from the chaos of the era, the underdevelopment of the people's wisdom, ignorance, and feudal superstition are still rampant throughout China. The son of the police officer Wang Zhizhang dies due to opium and he disdains the old society for the widespread crime and feudal ideology that poison the people’s minds. Hence, he disguises himself as a Taoist and infiltrates the local businessman Mr. Chen's house to investigate the opium smuggling case.