A luckless author with writer's block is asked to be the best man for an old college friend, only to fall in love with the bride-to-be at their engagement party. He tries to resist his urges and does his utmost to keep his crazy roommate - an old adversary of the groom - from sabotaging the wedding. As time passes, he discovers the groom may not be worthy of her love and that he may actually be the "best man" after all.