Hyomin and Xiaomin is a twin siblings with a different attitude. Hyomin is a kind and loyal while Xiaomin is Casanova. One day, only Xiaomin can help his family to replace his twin brother marry his brother's lover. That girl is Xiaomin's tutor and also should be become his sister in law when Hyomin suddenly disappeared in his wedding day. Will their marriage life stay longer when that girl always remember her twin that already lost since their wedding day?