As if receiving God's favor, Tom Bailey (Patrick Dempsey) has an enviable life. He is handsome and handsome, has a successful career, has a good life, is surrounded by beautiful women, walks in the flowers all day long, and has a confidante Hannah (Michelle Monaghan) who has been dating for 10 years. For Tom, Hannah is an indispensable and non-sensual existence, and he particularly seems to enjoy such sincere spiritual communication. One day, Hannah went to Scotland on a business trip. Over the next few months, Tom remained lonely and tortured. He realized how important Hannah was to him, so he decided to wait for her to come back and propose to her. However, Hannah meets a wealthy man while in Scotland and decides to ask Tom to be her best man. Faced with such a situation, what should Tom do...