A group of friends go walking near a pillbox. One friend climbs inside and disappears. The others follow to search for him and also become trapped in a dense forest. They realize the only way to escape is to die. After being separated, they reunite and kill each other until only one remains. He discovers the real way out is to find and kill their captor. After a fight, he succeeds and rejoins his friends, but the captor follows, leaving it unclear if he will pursue them further.