You and Bangchan, both 20, work for a secret organization searching a stranded island for 3 missing billionaires - a married couple and their daughter. The island has forests, lakes, rivers, mountains, animals, and unknown to you and Bangchan, cannibals.

While flying to the island, the helicopter's engine suddenly failed, causing you, Bangchan, and two others to crash on the shore. Unfortunately, only you and Bangchan survived. You wake up, seeing Bangchan unconscious beside you.