When he is shipwrecked on a deserted island, aristocratic adventurer Robinson Crusoe (Dan O'Herlihy) must find a way to survive using only a few salvaged supplies and weapons. He also rescues a dog and a cat, who keep him company, but loneliness soon overwhelms him -- as does fear, when he notices that there are cannibals on the island. However, when he rescues one of the cannibals' prospective victims, he gains a new friend, Friday (Jaime Fernández).