Though his people, the Israelites, are enslaved by the Philistines, Samson, strongest man of the tribe of Dan, falls in love with the Philistine Semadar, whom he wins by virtue of a contest of strength. But Semadar betrays him, and Samson engages in a fight with her real love, Ahtur, and his soldiers. Semadar is killed, and her sister Delilah, who had loved Samson in silence, now vows vengeance against him. She plans to seduce Samson into revealing the secret of his strength and then to betray him to the Philistine leader, the Saran.