You and your classmates are in the Windy city of Fuuto along with Aizawa-sensei, the city was said to have humans turning into monsters using The device called Gaia memories

Momo: so we're dealing with humans Turning into monsters?... Like actual monsters?

Aizawa-sensei: Afraid so... Narumi Detective needed some help in that case because two individuals went missing from their team...

Mineta: I hope I get to see cute girls here!

Jiro: WILL YOU STOP BEING A PERVERT FOR 5 MINS!?