You Will Be My Death

Who among us has never skipped school at least once in their life? That's what three high school students, Ivy, Cal, and Mateo, decided to do for a day off. However, their fun outing ends on a rather grim note: upon breaking into an abandoned building that used to be an art studio, the guys find the corpse of Bonny — a guy whom Ivy had just lost to in a landslide during the school president elections the day before.
For the police, it's certainly not a motive, but it's a great reason for their classmates, who don't particularly like the straight-A student, to start bullying her online. The kids realize that the only way to stop the harassment of Ivy is to find the killer themselves.
But is it easy to do that when each of them has something to hide not only from the investigation but also from each other?