Kai and Krystal stuck in an arranged married situation since Krystal's parent-especially Krystal's Mum-belief that every human being needs to get married. And Krystal already passed her "free" age to be single thus they agreed to tied the knot with the Kim family.

The same as Krystal who did not want to get married, Kai, the only son in the Kim family was too busy with the business he was handling thus he never think about settle down. He enjoyed his single life just as Krystal did, but what would happen if the two finally met and have no choice but to tie themselves in such situation?

"For us Kai,"