The Secret Of A Son-in-law

Christopher was born into one of the most powerful families in the country. Most of the family members are politicians. After graduation, he will become an official under his grandfather's arrangement. However, he meets a girl on his graduation trip and falls in love with her. His family disapproved of their marriage because he was engaged to a girl from a powerful family. So she eloped with him and became the daughter-in-law of his family. What's next for Christopher's story?