Devastated after his girlfriend leaves him for a Hollywood agent, Matt Sullivan (Hartnett) decides to give up sex for Lent. Actually, he gives up more than just sex, he's on a serious self-denial trip: no kissing, no touching, no nothing. Unfortunately, just as he embarks on this period of abstinence with his friends betting a lot of money that he won't last the distance, he meets the girl of his dreams...