December 1942: U-boat captain Johannes von Reinhartz receives an order for a secret mission. Simone is risking her life for a Jewish family. Hoffmann seeks justice and wants to leave New York.

While chasing U-822, Wrangel's frustration with his crew grows. Greenwood extorts more information from Hoffmann. Margot is stuck with the gold leaf in St. Rémy.

In order to raise the mood on board, von Reinhartz invites his team to swim - with fatal consequences. Hoffmann trusts Cassandra. Margot finds an important ally in Duval.

Wrangel finally has U-822 in sight and now demands everything from his men. Von Reinhartz completely loses the backing of his team. Margot desperately tries to save Elias.

Wrangel and von Reinhartz struggle with their teams at sea. Hoffmann's situation in New York comes to a head. The Jewish families from La Rochelle are due to be transported to Poland.

Wrangel and von Reinhartz have a dramatic battle on the Atlantic. Margot is horrified by a betrayal. The seriously injured Hoffmann asks Cassandra to leave the city with him.

Despite injury, Hoffmann made it to the agreed meeting point. In order to save the Goldblatts from being transported, Margot implements her risky plan. U-822 is approaching the US coast.