Nick follows Walter to the land of monsters and demands to see the person in charge. A New Year's Eve Party inspires a flurry of grand gestures.
On a Birch family ski trip, Leah prepares to go all the way with Val, and Andrew hits it off with a fellow ski noob. Matthew helps Jay out of a slump.
Missy tries to show her cousins she's not a dork, Andrew takes a stand against his dad's turkey tyranny, and Jessi hopes for a Thanksgiving miracle.
Emboldened by their new monsters, Missy and Nick descend into a hate spiral. Meanwhile, Jay puts on a big show to win back Lola.
Unrequited love and jealous rivalries turn the friends into seething beasts. Andrew gets a little too invested in a substitute teacher.
As Walter the lovebug coaches Nick on the matters of the heart, Jessi gets fired up about protesting the school's problematic mascot.
While Jessi sorts through her feelings for Ali, Nick joins Devon for a boys' night, Andrew shows off his new persona, and Missy starts a rumor online.
Eager to get his mojo back, the Shame Wizard drops in on swim class to torment the kids with bodily insecurities.
To get his mind off Lola, Jay begs his pals to join him in a monthlong challenge. Missy's caught off guard by a new crush.
Yakko explains the history of the world./Gerard has a gnome in his mouth./Pinky and Brain are mouse-napped by another super-villain./Dot gives a dramatic math lesson about beach balls.
The Warners pick up a bunch of stranded, mythical creatures before a flood./The Warners apologize to their viewers./Pinky and Brain try to take over the world with music in the '60s./The Warners revisit some archival footage.
The Warners lead a mandatory exercise break./Brain's plan to take over the ISS is foiled by an old adversary./The Warners cue up some targeted ads./Starbox fails to escape Cindy during bath time.
The Warners take on a Thundercats look./The Warners work as Benjamin Franklin's apprentices./The Warners take a DNA test, only to find out they're related to the CEO.
The Warners parody Oliver Twist./Pinky's hands have a mind of their own./The Warners' parody of Oliver Twist continues.
Yakko has a new idea for an invention./Pinky participates in a "Miss Universe" pageant./The Warners revisit some rejected 'Animaniacs' characters.
The Warners are harassed by spam./Nora must fill the segment time by airing failed, never-before-seen 'Pinky & the Brain' pilots./The Warners give safety advice.
The Warners heckle an artist at a museum./Brain wants to become a dictator./The Warners try to find something to watch on a streaming service.
Yakko goes head-to-head with an animator./The Warners fight over who knows the longest word./Brain is forced to celebrate Pinky's birthday./The Warners sing a song about the Magna Carta.