Oscar, Milo and Winnie put their Mr. Baldwin through a series of tests to determine who is the World’s Greatest Teacher, but it doesn't out well.
Mr. Baldwin is sat down on a chair, tired due to the contest Oscar, Milo and Winnie organized secretly. They decide to show up and announce they she has won their contest and has proved to be the Best Mom ever. However, when he discovers he has been suffering all this time because of them, he angrily screams at them as he tells Winnie that he's gonna tell her mom.
Later at the Grouper's house, Oscar and Milo then show Mr. Baldwin an edited video that they made of Anais saying bad things about him. Mr. Baldwin and Winnie are hurt about what Winnie "confesses" in the video, assuming that it was real. Then there's a piece of the video of Milo talking about the plan, making him really furious. He also expells them and scolds Winnie for making his life miserable. Winnie storm off to her room telling Mr. Baldwin that they are good students. Later on they were all eating dinner Penelope was saying how his day was. Richard responded about how Oscar and Milo were the bad students and saying that Winnie was even worst than them. Penelope didn't know what he was talking about. Mr. Baldwin then explained to her about everything about them doing a "silly contest" that ruins his life, then she was upset.
Mr. Baldwin: THAT'S IT! I'VE HAD IT WITH YOU THREE! FIRST YOU STARTED A STUPID CONTEST ABOUT BEING THE BEST TEACHER, THEN YOU START PULLING PRANKS ON ME AND NOW YOU EDITED THAT VIDEO!! I HAVE NEVER BEEN SO HARD ON YOU IN MY LIFE!! WHAT AM I GONNA DO WITH YOU THREE!!
Winnie Grouper: Please calm down, dad. I think you're overreacted.
Mr. Baldwin: STOP TELLING ME TO CALM DOWN! YOUR FRIENDS ARE NEVER COMING BACK!! NOW GO TO YOUR ROOM!
Winnie Grouper: (angry) Look we've been nice to you all day, we tried everything but nothing works! Well you know what, dad! (In a sinster tone) They're just good students.
Mr. Baldwin: Oh. Okay. But first. How about YOU STOP BEING SUCH A ------ AND GO RIGHT NOW!
Winnie Grouper: Alright. (She storms off to her room.)
The next episode is Pet-Sitting Day Afternoon, where Opal's family and Oscar are at the concert, his dog-hating and cat-loving cousin, Rita has to watch Rosie for them.
Kyle Massey as Milo
Justin Roiland as Oscar
Dana Synder as Mr. Baldwin
Emilie Barlow as Penelope
Stephanie Ann Millars as Winnie Grouper
Tom Kenny as Mall manager