Simon, Nate, Addy, Cooper, Brownyn are all in detention because someone placed phones into their backpacks that were not theirs and stop to watch a car crash that happens outside the window. Simon drinks water and then out of nowhere he...
falls to the floor and cooper tries to go run and grab his epipen from the nurse. someone screams "call 911" and they do and the ambulance comes quickly.
Later that week the four people get called down to the front office and the get the horrible news that Simon had died. and they were all in shock and had no idea of what was going on or how it all happened.
The first Tumblr post came out about them saying that one of them did it and poisoned Simon with peanut oil and it got everyone freaked out knowing that one of them did it or that everyone thinks that one of them did it.
They all got called back in the conference room about the tumblr post that the principle thinks one of them did it. They ask who did it but none of them answer because they all know that someone is really behind everything and they didn't do any of it.
The school held a funeral for Simon and all the kids went and it was very emotion and it is still an on going mystery.