Better than Home... (Max x reader x Yan!Brainwashed Max)

You get sent to a camp (where your sister Gwen works) by your abusive parents knowing that they left you there you decide to make the most of it. While you're there you meet a boy named Max and he seems really cool. You two have a lot in common and you find out that David is his dad (adopted). One day you were walking in the woods when you saw Max but in a white hoodie. You decided to go over to him but he ran away. You went back to camp and asked Max about it but his eyes went wide and said, "The cultists are back..."