In a world where trust don't exist, where the weak fall harder, where the law means nothing, where havoc never ceases, where your existence is a lie, where you're born to KILL. How would you have lived this life? For the 5 UCs, it has never been easy and for their handler, it was even harder watching them go through this every single day. 

A chance to change things, to change the past, to change the present, to change the future. How would the leader turn things around to save her members?

Sowon's last words as Kim SoJung to her members... What were they?

What happens when Gfriend's leader leaves the team? How would her five younger siblings take it?