After narrowly avoiding being discovered by the three groomsmen who are the reason she plans not to get married today, the runaway bride, taking refuge at a closed Irish bar, continues her story to the bar owner about the reasons behind running away. She had previously told of the road to one wedding, that of doctors Pete and Chelsea, who met at a wedding themselves. The continuation of the bride's story starts with the telling of another road to a wedding, that of lawyer Nolan and business manager Zack, their relationship which had been on again/off again largely in Nolan's hesitance partly due to work commitments in his goal of becoming DA. What neither Nolan or Zack realize is that one of Zack's clients, Danny, a pro baseball batting coach who Zack considers his best friend, and is also in a longtime best buds bromance with Pete and another childhood summer camp friend friend, divorced Jackson, has long had romantic feelings for Zack without ever having the nerve to tell him in fear of losing Zack as a friend. Thus Zack asking him to be his best man and to help organize the wedding in Nolan's absence in dealing with work is difficult for Danny in being there for Zack for what is supposed to be the happiest moment in his life with another man. But one disaster after another in the planning of the destination wedding on Santorini, the site of a memorable previous vacation for Zack and Danny, the disasters outside of Danny or Zack's doing, may be signs of what should or will happen.