|Chris Klein||Gilly Noble|
|Heather Graham||Jo Wingfield|
|Orlando Jones||Dig McCaffrey|
|Richard Jenkins||Walter Wingfield|
|Eddie Cibrian||Jack Mitchelson|
|Brent Briscoe||Vic Bloomfield|
Boy meets girl; boy falls in love (and had wild, non-stop sex) with girl; boy loses girl... when they discover they are brother and sister! But when he learns that he's the victim of the ultimate case of mistaken identity, the lovesick young man -- whom everyone still thinks is after some taboo thrills -- must race across the country to stop her from marrying another man.