There's a "challenge" going round online that everyone's filming themselves doing. It started harmless — a dance, a silly face — but the version going round your school now involves doing something that could actually hurt you, or get you in trouble, to get more views. Your friends have done it. The videos are getting loads of attention. People who do the challenge are getting talked about; people who don't are invisible. You're being asked when you're going to post yours. The whole internet seems to be doing it, which makes it feel safe — even though a part of you knows it isn't.