Byung Man's Tribe spends the last day in the mangrove forest. They divide themselves into three teams to search for food. Jung Chul's team comes across a huge cave. They catch crayfishes in the shallow water inside the cave. Byung Man's team runs across the native Mani tribe living in the jungle. They learn some hunting skills with the poisonous needles. Can they be able to escape from the mangrove forest and encounter the sea?