Set in 1946 Hamburg, The Aftermath follows Rachael Morgan as she reunites with her husband Lewis, a British colonel. Their strained marriage, haunted by their son’s death in the Blitz, is tested when Lewis allows German architect Stefan Lubert and his daughter to stay in their requisitioned home. Rachael’s initial hostility toward Stefan softens as they bond over shared loss, leading to a passionate affair. Meanwhile, Stefan is suspected of involvement with the Werwolf insurgency, but the real threat comes from his daughter’s boyfriend. As tensions escalate, Rachael must choose between her new love and her marriage.