This volume started off light and humorous with the appearance of the Fantastic Four. But it quickly became pretty intense with the introduction of new (and in my opinion, pretty creative) enemy - The Danger Room. When the school was attacked, the students naturally hid in the Danger Room (a simulation/training room of sorts) which was supposedly (and ironically enough) the safest place on campus... but wait! The door disappears! Everyone is trapped, and the Danger Room becomes (duh) dangerous.