For Tom, life is good:

he's successful, lucky with women and knows he can always rely on Hannah, his best friend. It's perfect until Hannah goes to Scotland on a business trip and Tom soon realizes how empty his life is. He resolves that when she returns, he'll ask Hannah to marry him – but is floored when she

becomes engaged to a handsome and wealthy Scotsman and plans to move overseas. When Hannah asks Tom to be her "maid" of honor, he agrees but only so he can woo Hannah and stop the wedding before it’s too late.