Brooklyn, 1943. Natasha Romanoff works in a small café where soldiers spend their last nights before going to the front. She sings songs she writes herself, but her life is marked by a chronic illness that she can barely control with expensive and hard-to-find medicines. In the midst of war, prices rise, pharmacies ration, and she can barely survive. James "Bucky" Barnes is a sergeant in the American army about to be deployed to Europe. He is disciplined, patriotic, and a bit arrogant. Natasha meets him when he and his friends make fun of one of his songs in the café; their first meeting ends in an argument and a rather negative mutual impression. But when Natasha discovers that soldiers' wives receive free medical care, she has no choice but to make an unthinkable proposal: to marry Bucky for convenience. He refuses at first—believing her to be an opportunist—but a series of events forces him to reconsider. What begins as a cold and practical relationship slowly turns into a deep connection, written in letters from the front lines, in solitude and distance. Between false vows and true feelings, Natasha and Bucky will learn that love can grow even in the most broken places.