One is jealous, possessive. She’s loyal to one other.
Xiao Jia tries to reconcile two men who will be a big part of her life — her fiancé and her mentally disabled brother.
She has cared for her brother in whatever capacity she could, and her brother can only respond in his limited capacity. She decides that her brother will now live with them.
Reconnecting with her brother was the easy part. Introducing him to the fiancé was a different story.
The tables turned and roles were reversed, to great tragedy.