I asked this question a long time ago, but it wasnt answered. Gonna repost it to try again.
I never saw the whole thing, but all I remember is that the opening credits involve the family (mom, dad, and son) packing up for their family vacation. They go to some camp grounds and while there they meet this younger guy. He's an adult camping alone, but they make friends with him. Later that night, the kid sneaks out to go visit his new friend. He catches him at his campsite pulling on gloves. He tells the kid he doesn't want to go along with him for what he is about to do. The kid protests, and the adult guy relents and brings him along. He ends up breaking into a house and starts trashing the place. The kid follows him inside even though he's terrified. That's all I remember because I turned the movie off at that point.