"Stupid bitch" (chapter 1)

Holly Maddison Decker, 15 and lost. Sweet, kind, quiet, shy and observant. Abused at an orphanage, she is taught that she is worth nothing and will never amount to anything.
What happens when a group of boys from YouTube called the Sidemen visit the orphanage to find a kid to take care of?
What happens when KSI adopts a fifteen year old girl in hopes of finding a new family?
Will Holly learn to adapt to his lifestyle or crack under the pressure?