Tirzah's people, the Israelites, have been in slavery to the Egyptians for many years. Tirzah and her lame brother, Oren, help gather straw to make bricks. She observes the suffering of her people and the injustices that are done to them by the Egyptian masters. Moses begs Pharaoh to let them go, but Pharaoh makes them work harder.

One night, when the plague of death strikes down Pharaoh's own son, he allows the Israelites to flee on foot, only to pursue them with horses and chariots. He believes he will have them trapped between the mountains and the sea, but God miraculously delivers them. The Israelites celebrate with a song of hope and victory.

Tirzah befriends a young Egyptian girl who has fled with them, even though others treat her badly. In spite of hardship and disappointment, Tirzah and her family keep trusting Yahweh to carry them through.