An adult gets sent back to the past to become a substitute teacher for like, what, four (and more) of the worst kids he's ever met? It was initially a favor, but Arel finds himself in deeper mud than he'd thought.
His boss was far too different from the future, and this weird girl keeps acting like he's not even supposed to be here. Of course he isn't!
But why?
Everything collides and he's not even the one to stop it? Why is he even here, then?!