After a student is caught smoking, the Abbott staff come together to revamp the outdated drug policy. Meanwhile, Janine tries to prep the new substitute teacher for her class but finds it challenging to give up her former role.

Abbott Elementary is deemed a Philadelphia historical landmark, much to Ava and Janine's delight; however, Barbara and Melissa are not as impressed. The school plans a celebration in honor of its namesake, but not everything goes as planned.