Changmin was the first son of Shim family. He had an one year younger sister named Amber who was sent to Beijing when she was 9 years old and back to Seoul for continuing her study at the same high school with Changmin.

One day, Mrs.Shim had a fever for a long time, so Mr.Shim decided to do some laboratory test to know what is the disease that his wife had.

However, the Doctor was still a human that have some errors. The blood sample of Mrs. Shim have been exchanged with the other patient who had cancer at four stadium, that means her life could be count in a few years, months, weeks or days. So Mrs. Shim had a last hope that she wants to look one of her childs married. 

But however, both of Changmin and Amber were still teenager and still learned at an Senior High School.

In other hand, Victoria who is Amber's bestfriend at elementary school flied away from Beijing to Seoul because of her father bussiness. Her mother was passed away since she was 11 years old. 

What will happen if then Changmin and Victoria were arranged in a marriage?

How about their school? and their teenager life?