class 1-A, class 1-B vs villans (sorry for my spelling)

villains come and clas B and A have no choice but to work together. and aparttenly shinso, baku and monoma have differnt speacial quirks that might be overpowered. overhaul and dabi are secertly heros?! or at least want to be heros and not villains and help the classes and pro fight the others?!?!
what? is. happening?