Movie Story : Tom and Hannah have been close platonic friends for a decade, though their approaches to love could not be more different. Tom is a serial dater who avoids commitment, while Hannah dreams of a wedding and a husband but has yet to meet the right man. Just as Tom begins to believe he might be ready for a real relationship, Hannah announces her engagement. When she asks him to serve as her maid of honor, he reluctantly accepts, hoping to halt the wedding and win her heart.