You´re a 20-year old girl/women (whatever you want to call it :)) and live in Seoul, South Korea together with your brother Zitao, your father-like friend Yifan and your too-flirty friend Luhan.
You came to live with them after suffering from amnesia.
They refuse to tell you what caused your amnesia and you live like that until you meet an old acquaintance...
The people that were your friends and then something happened. You don´t know what because of your amnesia. :) (the picture isn´t mine :))
Your loving older brother who owns the house all of you are living in (again not my picture:))
Your father-like friend (also not my picture :))
Your way too flirty friend... (this picture isn´t mine either :))
You´re 20 years old and live in Zitao´s house together with Luhan and Yifan (you guessed it: not my picture :))