The hunters were bloodthirsty so when they heard sounds coming from the jungle they immediately thought it was the beast but it was really Simon coming to tell them the beast they saw was really the soldier that fell on the island. They then attack Simon and beat him to death and the ocean washes him away.
Jack tribe raided Piggy's camp and took his glasses so they could start a fire. Piggy's tribe tries to start a fire without it but fail so they go to Jack's camp to try to get them back. Jack and Ralph then start a fight and Roger pushes a boulder intended to hit Ralph but then hits Piggy instead and kills him.
In the end Ralph gets chased by Jacks tribe to the end of the forest and meets a Military Officer. He says he will rescue them.