Details of the U-612 losing control and sending for help reaches the shore and Forster has the task of breaking the news to Simone. As they spend more time together and his feelings for her continue to intensify, a startling discovery raises suspicions about Simone’s true involvement in the resistance. A vengeful Carla grows unhappy with this relationship, resulting in Simone rethinking her allegiances. Another bold move by the resistance puts innocent lives on the line once again. Will this jeopardize Simone's ability to stay faithful to Carla? The U-612 dramatically makes it to the surface, however the battle isn’t over as they must find fuel to continue their journey. With the crew still struggling to agree on how to proceed, but with only enough fuel to last one day, their time is running out. The only boat on the horizon is a Russian freighter - will the crew have another stroke of bad luck?