Due to the pollution of chemical waste, the creatures in "Longtan Lake" in a Southeast Asian country have produced terrible mutations. At the same time, under the leadership of local guide He Chao, a group of people from China embarked on an adventure tour of Longtan Lake. Along the way, everyone encountered various strange phenomena, and even encountered attacks by giant beasts. In the end, how will they step through the dangers and defeat the beasts to escape from the danger.