Under a full moon, a prehistoric, tree-dwelling tribe of women dance with abandon and listen as the tribe's elder tells the story of how the tribe was founded by Tana, mother of the current leader, Tigri: A generation before, women were slaves to the men. One day, Tana threw a rock at the tribal leader, and she and the other women fled into the jungle with their daughters. The women eventually became proficient at hunting and fishing, and lived quite happily until Tana was mortally wounded by Guaddi, a savage giant who had roamed the jungle for years. At the end of the story, the Wise Old Lady tells the women that they must find and capture husbands by the next full moon, to ensure the tribe's survival. The next morning, Tigri and five other women set out on their mission. When the women come across Engor and members of his cave-dwelling tribe, they attack the men and tie them up. Engor escapes, but the rest are taken back to the women's camp, where they are inspected by the Wise Old Lady. Several weeks later, when Engor has recovered from wounds suffered while wrestling with a panther, he vows to rescue his tribesmen and bring the women back as slaves. Along the way, Engor loses his club fleeing from an elephant, and while making a new club, he strikes two stones together and discovers fire. The women ambush Engor as he approaches their camp, and the handsome captive's presence sparks a rivalry between Tigri and Arva. The two women fight fiercely, but Tigri prevails and claims Engor for herself. The next day, Engor fashions a torch out of some sticks and furtively pounds some rocks together, managing to light the torch just in time to defend the tribe against a flying dragon attack. Still wielding the torch, Engor orders the men to subdue the women, who are then forced to serve the men like slaves. Engor soon misses his own people, and he tells the men to prepare for the journey home. With the captive women in tow, the men make their way through the jungle, where they encounter the terrifying Guaddi. They take refuge in a cave, and the men trap the giant in a circle of fire, leaving him to perish in the flames. Tigri, now in love with Engor, asks him to return to the women's camp and start a new tribe, and when he agrees, the other men follow suit. That night, around the campfire, the couples pair off, and the Wise Old Lady performs the marriage ceremony. The women dance to express their happiness.