Viviette’s husband, presumed lost, unexpectedly returns and dies, leaving her free but in a precarious situation. Meanwhile, Swithin receives an opportunity to study astronomy abroad, forcing them to choose between love and ambition. Viviette, fearing a scandal, is pressured into marrying an older aristocrat, despite her true feelings for Swithin. Heartbroken but determined, Swithin pursues his scientific dreams, unaware of Viviette’s suffering. Their tragic separation highlights Hardy’s theme of fate’s cruelty and social constraints on love. When Swithin finally returns, he discovers the irreversible consequences of class expectations, sacrifice, and miscommunication. In the end, their love, once boundless under the stars, is defeated by the weight of social reality and destiny’s irony. The novel closes with a melancholic reflection on lost love and the relentless passage of time.