Ben Murphy (John Krasinski) and Sadie Jones (Mandy Moore--Chasing Liberty) are young, in love and plan to marry. The only catch is Sadie's family church, St. Augstine's, and its Reverend Frank (Academy Award winner Robin Williams--Happy Feet, Man of the Year), who will only bless Ben and Sadie's union after they pass his patented, "foolproof" marriage-prep course. Consisting of outrageous classes, outlandish homework assignments and outright in invasion of privacy, Reverend Frank's rigorous curriculum puts Ben and Sadie's relationship to the test. Forget happily ever after--do they even have what it takes to earn their License to Wed.