Trapped in a video game

"Jesse Rigsby is on a mission to save his friend Mark, but first he's got to shake the Bigfoot chasing him through the school library. And then there's the velociraptor in the bathroom. Oh yeah, don't forget about the ginormous flame-throwing bat in the cafeteria. Jesse's trapped in the invisible world of Go Wild -- a Pokemon Go-style mobile game -- and if he doesn't solve the mystery of what happened to Mark soon, he's never getting back out."