Kang Lili lived with her mom whole her life. Her mom suddenly got sick and her last wish was for her daughter to marry one of her friend's son. Lili accepted her mom's wish not wanting for her to be upset in her last days.
Lili's mom decided for her to marry Kim Taehyung. Taehyung's mom and Lili's mom were best friends and Taehyung's mom wanted for her best friends daughter to be safe so she agreed to marry them.
Two days after their marriage, Lili's mom died and Lili was supposed to move into Taehyung's house in Seoul.
That's how their life began.