Li Wei, a top student who graduated from the Department of Biology, accidentally saw the news on the Internet that there were giant insects on an island near Southeast Asia that was covered by thick fog all year round. He invited several colleagues from the company to explore the island during the holiday in order to collect insect specimens. After several twists and turns, they found that there were not only giant insects on the island, but also bloodthirsty behemoths. When they were in danger of their lives, they were rescued by a group of mercenaries who went to the island to perform a special mission. But the dangers waiting for them were far beyond their imagination...