Jim (jason biggs), who is becoming more and more handsome, has a hard time these days, because his grandmother is seriously ill and wants to see her little grandson as the groom, but she got her wish. Unfortunately, although Jim had more than a dozen girlfriends before, none of them wanted to marry him. Seeing that the three days stipulated by grandma are about to pass, Jim has not found a satisfactory girl yet.
By chance, he meets the beautiful Michelle (played by Alison hannigan), an innocent girl full of dreams. They fell in love at first sight and immediately began to prepare for the wedding. Jim and Michelle plan to hold a lifelong activity for their grandmother who is seriously ill in bed in a week and a half. But, after all, time is too short. They not only have to make all kinds of preparations for the wedding, but also need to know more about each other.
He is my brother. He grew up with Jim. Of course, he will join in the fun. Steve (seann william scott), a divorced single boy, is stimulated by Jim's marriage and plans to hold an unprecedented crazy bachelor party. Kevin (Thomas Ian Nicholas), who also suffers from loneliness, raises his hands to show his approval, but on the other hand, he has to watch out for the bride's sister (Jane Jones) being abducted by Steffler.
The wedding date, who watched Jim and Michelle get married, is coming, but the situation is getting more and more chaotic. Jim's nagging father (eugene levy) also came, still telling the truth that no one listened as usual, and Michelle's family also came, and the wedding began in an unprecedented joke.