Chih-hua's dad and Ah-fu's father make a bet of a million dollars of getting their sons to marry Japanese wife and American wife. respectively. They both invite Ma Dachang as their instructor, all these make a lot of silly things happened. One day, Chih-hua meets Lily, a lovely Japanese girl accidentally, he falls in love with her. However, unexpectedly, Lily is a princess of Japan who leaves home....