Why does the cannibal island have hallucinations?

The reason why there are hallucinations on the cannibal island is because there is a plant called ayahuasca on the cannibal island. The juice secreted by the ayahuasca evaporates and is absorbed by humans, which will cause hallucinations. Cannibal Island tells the story of a group of young people who received a text message inviting them to the Lost Soul Island, and each went to the Lost Soul Island alone. They found that all the residents of the island had disappeared, and various strange events occurred one after another. Five people died mysteriously, and there were strange plants and zombies. .