A retired Chinese soldier, Lei Jun, finds himself in a race against time when a terrorist attack targets a Chinese community abroad. With only 12 hours to act, he must summon all his strength and courage to protect his fellow citizens and survive the dire situation.

A man's body was found in the wetland beside Erlong Lake in Siping City. The police launched a full investigation. Suddenly, a night-shift taxi driver Yang Dawei surrendered to the police headquarters. Night before Dawei meet classmate, drunk as a lord that resulting in an accidental collision on the way. But it was only first step that led to another vicious criminal case

When World War II broke out and the Japanese army occupied the northeast, they repeatedly sent mysterious troops into a massive cave near Dida Juzi. According to legend, the Japanese discovered an immense treasure there. Sixty-five years later, a Japanese tycoon travels to Er Long Lake to invest in building a factory, only to unexpectedly awaken a water monster. Suddenly, Er Long Lake becomes the center of nationwide attention, sparking a series of hilarious events revolving around the creature.