A spirited young bride-to-be living with her single mother on a small Greek island secretly invites three of her mother's ex-boyfriends in hope of finding her biological father to walk her down the aisle.

大衛（喬治麥凱）與艾利（凱文格斯理）從阿富汗役畢返回愛丁堡時，他們開始學習進入「平凡」的生活。許多浪漫與喜悅之事也隨之而來的，包括大衛的父母羅伯（彼得穆蘭）和珍（珍霍洛克）正準備慶祝結婚25週年紀念。然而，某天羅伯卻收到一封神秘信件，意外開啟塵封已久的秘密…