An estranged brother and sister reunite at their father's funeral and make a spur of the moment decision to fulfill their childhood dream of driving across Mexico on their old motorbikes.

朱莉亞是知名的美食評論家，喜愛享用當下、惧怕許下承諾，即使如此，她卻與她最好的冤家曼奴約定，要是兩人滿35歲了都還單身，就要與對方結婚惋惜就在朱莉亞35歲生日的前幾週，曼奴告訴她，自己4天後要跟一位名為帕梅拉的年輕女孩結婚了！朱莉亞此時才明白自己深愛著曼奴，如今她只剩下幾天的時間去破壞婚禮，把好友搶回來坚信自己才是曼奴独一的愛，朱莉亞決定不計任何代價也要阻止這場婚禮！