In this second book in the My Weirder-est School series, A.J. and his friends are getting a substitute. Miss Porter isn t your average teacher, though. She s a Personal Digital Assistant that literally knows everything. She can tell a million hundred weird jokes and get pizza delivered by drone in seconds! But what happens when Miss Porter s system is no longer set to fun? Will anyone be able to shut her down before she takes over Ella Mentry?