At her wedding reception, the beautiful but depressed Justine spots a red star in the sky. It is the planet Melancholia, which is on a collision course with Earth. The bridegroom Michael tries to calm her down with his love, her mother Gaby poisons her with her darkness, and her sister Claire attempts to rescue her with her solicitude. But no-one can stop the mysterious forces ignited within Justine. And Melancholia gets closer and closer…

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.