Tiffany had been dating Chad for a while and was delighted when he asked for her hand in marriage. Then, when she meets his sister Kelly, she asks her to be her maid of honor. But as Kelly and Tiffany shop for bridesmaids dresses, they find an unexpected spark between them. Chad finds out his sister and his fiancee kissed and is upset, especially when he realizes the women have feelings for each other. Will Tiffany be able to ditch Chad for his sister?