After traveling through a magic portal to puberty headquarters, Nick seeks out a new Hormone Monster and Jessi bonds with the Depression Kitty.

A big standardized test sends everyone into a panic -- except for Jay, who just scored an Adderall prescription.

After seeing their eighth grade classmates coupled up, Nick and Andrew make a play for two seventh grade girls. Jessi adjusts to life in the city.

On a trip to the 9/11 museum, Nick and Andrew sneak off to meet Jessi, Devon teaches Missy about code-switching, and Coach Steve gets a rude surprise.

Wracked with guilt, Andrew tries to keep his urges in check. Matthew's mom ices him out of the church bake=off after reading his texts.