The film starts amusingly enough with a narration from Mother Nature discussing what she described as an experiment she and Father Time cooked up that went horribly wrong. In the land of Wongo she made a race of men in which all the males were brutish and ugly and the women are beautiful and well endowed. On another island, Mother Nature also created the opposite, where the women were repulsive and the men were strong and handsome. For years the two islands lived unaware of the others existence until some ape men from beyond the sea attack the village of the handsome men. Thus they send out the son of the king to look for help against these barbaric invaders. Eventually the son finds the island of Wongo, the day before the time in which the ugly men pick their brides. The women, seeing the handsome prince for the first time, begin questioning their life among the brutes that dwell in the village. The men, seeing this, grow jealous of their visitor and plot to kill him. The women of Wongo, finding out about this, risk their lives to protect the handsome prince, and in doing so offend the reptile god of the Wongo people. The women are then rounded up by the villagers and are sent out into the wilderness until the reptile god has drawn blood for the insult. The women band together, watching each others backs until the apemen arrive at their village and, after they dispatch the invaders to the crocodile "god" (really an alligator) leave in search for the men which had abandoned the island. In the other village the men have just begun the rite of manhood in which they go into the jungle without weapons, and spend a month alone. The women of Wongo coming upon the weaponless men, decide to take advantage of their helplessness and, one by one, trap them as their own. The film concludes with all the beautiful men and women getting together leaving the ugly men with the ugly women.