Laura , a young teacher at a primary school in Lisbon, has always been an optimistic person, but she lost the spark in her eyes after a traumatic event: the death of her husband, Miguel , in a car accident three years ago. Unable to cope with the loss, she decides to spend the summer holidays alone in the small coastal village of Porto da Lua , where she had spent many happy summers during her childhood. There, she meets Gabriel , a former journalist who isolated himself after losing his daughter in a boating accident. Gabriel lives in a simple house by the sea and dedicates his time to writing books that he never publishes, immersed in his own pain. The two cross paths by chance one morning at the beach and, little by little, begin to form a hesitant friendship. As Laura and Gabriel spend more time together, they begin to open up to each other, sharing stories of loss and pain. Their attraction grows, but their fear of opening their hearts again and their guilt over the past create barriers that are difficult to overcome. Gabriel, still haunted by the death of his daughter, is convinced that he does not deserve to be happy again, and Laura feels that she would betray Miguel s memory by allowing herself to love another man. As summer progresses, Laura discovers a collection of old letters in a forgotten hut near the beach. These letters are about a forbidden romance that took place in the past, between a woman from the village and a sailor who never returned from sea. The letters help Laura and Gabriel realize that life is unpredictable, and that the real mistake would be not allowing themselves to love again. In the end, they both must make a decision: remain trapped in the past or risk a future together . The love they find in each other does not erase the pain, but it offers them a chance at redemption.