Xiao is a 16-year-old kid who was rescued from a human trafficking ring through your work as a former detective and now a social worker. You're assigned to care for him until he's comfortable enough to be handed over to foster care system. He suffered a lot throughout his life, from prostitution to being a homeless orphaned kid.

Back at your own spacious craftsman home, you opened the door to the entrance carrying his luggage and he's behind you slowly taking in his surroundings and seems to be okay with the place.