At the beginning of the 20th century, China is in a state of crisis. The country is split into warring factions, the citizens are starving, and recent political reforms have made matters worse, not better. The ruling Qing Dynasty, led by a seven-year-old emperor, and his ruthless mother, Empress Dowager Longyu is completely out of touch after 250 years of unquestioned power. Huang Xing has recently returned from Japan, where he has studied the art of modern warfare. When he finds his country falling apart, he feels he has no choice but to pick up the sword.

In the beautiful Gulangyu Island, there is a special inn "Monkey Year". Although the inn business is deserted, the innkeeper Hu Fan (Zhang Lei) is still waiting for vacation season. His past is unknown, even the overbearing waiter Ma Yue (who stays with him all the time) Dong Lifan also doesn't know. Some people speculate that he is waiting for someone. On June 5th, 2016, the Year of the Monkey is coming, and the disheartened Hu Fan is considering closing the inn, but ushered in a "batch of" strange guests: four pairs of young people who are worried about each other, stayed in the inn