When Margot (Michelle Williams) meets Daniel by chance, they connect instantly. But Margot suppresses her desires-she is happily married to Lou (Seth Rogen), a goofy but lovable cookbook writer. When Margot discovers that Daniel lives right across the street, temptation becomes too hard for her to resist. Warm, funny and refreshingly honest, Take This Waltz leads us, laughing, through the age-old question of what long-term relationships do to love.