These theories are not mine but however may very well be true:)

"If we stick together then everything should be okay," After the forced closure of the once loved Freddy Fazbears Pizza, everything went back to normal. Except for the ones who survived the seven nights of working there. The constant night horrors and hallucinations still haunt them to this day and after the 'grand re-opening' posters were posted all over town, they know what horrors may befall those unlucky people who take the job of the security guard.

Robin decides that the Teen Titans face their most difficult and most challenging phase yet..... highschool