

Mr. Young
Season 3
TV-Y7
A 14-year-old kid named Adam Young went to college when he was nine. He got a job at Finnegan High School as the science teacher. His best friend Derby and older sister Ivy go to the same school. He develops a crush on Echo Zizzleswift, one of his own students. Echo secretly loves science as much as Adam does. Another of his students, Jordan "Slab" Slabinski, often bullies nerds. Derby is his best friend and always falls asleep in science class.
Where to Watch Season 3
28 Episodes
- Mr. & Mrs. RobotoE2
Mr. & Mrs. RobotoArthur returns and makes Adam & Echo babysit Arthur's kids. Meanwhile, Derby and Ivy decide to dress up as robots so they can make friends with Arthur. ARTHUR returns to Finnegan with his new robot family and asks Adam to babysit his "grandkids." Adam agrees and tries to impress Echo with his parenting skills, but soon realizes that dealing with kids is not as easy as it looks. - Mr. HydeE5
Mr. HydeAdam makes a drink that will make him more confident to ask Echo out, but it ends up wrong when he turns into a monster. And even worse is that whenever he talks or thinks about Echo being cute he turns into the monster. Now he must stay away from Echo to prevent from turning into the monster. But in the end, Echo accidentally drinks the potion and now when she thinks about Adam being cute she turns into a monster. - Mr. ElfE6
Mr. ElfWhile returning a lost Rudolph to the North Pole, Adam unintentionally suggests Santa automate his workshop, which results in Santa firing the elves. The unemployed elves follow Adam back to Finnegan to have him put things right. Now it's up to Adam to find them a new job, or deal with their pint-sized wrath. - Mr. TimeE7
Mr. TimeWhile experimenting with a white hole, Adam accidentally causes time in his classroom to move incredibly fast. As he works to solve the dilemma, he and Derby age sixty years over the course of twenty-two minutes. Meanwhile, Echo and Slab team up to stall Tater from entering Adam's class, which would cause the time vortex to spread throughout the school. - Mr. Pickles-In-LawE8
Mr. Pickles-In-LawWhen a new girl arrives at Finnegan, Derby wins her heart. But when it's revealed she is the daughter of his sworn enemy -- TV Pitchman, Preston Pickles - he is forbidden from dating her. Derby must find a way to pitch himself as good boyfriend material to the ultimate pitchman. - Mr. Love LetterE16
Mr. Love LetterThe Finnegan High time capsule is dug up twenty-five years prematurely and Adam panics when his love letter to Echo is discovered. Luckily, Adam's signature has been destroyed. But when a student claims to be the author of the letter and he and Echo get close, Adam must prove the student is lying, without exposing his true feelings for Echo. - Mr. First Impression Part TwoE19
Mr. First Impression Part TwoIn order to make a better first impression on his crush Echo, Adam uses a time machine to travel back to the past to meet her for the first time all over again. After returning to the present he realizes his plan has backfired and he has to time travel back again to repair his relationship with Echo. However, the time travel mishaps multiply and spiral out of control and soon Adam’s meddling in the past has him scrambling to keep from being permanently stuck there.Eventually by the end Adam decides to not change the past and goes back to the present. There Echo tells Adam that she likes him and they start dating. They then kiss. They decide to keep it a secret from everyone else. - Mr. KiddE22
Mr. KiddAdam must stop the new, teenaged science teacher, Mr. Kidd, from using Adam's own memory-erasing invention against him. If Adam fails, everyone's memories of him will be erased, and Adam will lose everything. Meanwhile, Ivy and Slab have to do a book report on George Orwell's 1984 ... But first, they have to figure out what it's about. - Mr. Finale (1)E27
Mr. Finale (1)Dang is called back to Vietnam to take over for Master Ki as guardian of his village. The gang heads to Vietnam to try and convince Dang to come back to Finnegan for graduation. While there, Adam discovers an ancient scroll that points to the mythical fountain of youth, which if found, could make Master Ki young again, releasing Dang from his duties. But to find the fountain, Adam must go up against Echo who is trying to preserve the leaf monkey habitat. - Mr. Finale (2)E28
Mr. Finale (2)While Adam and Derby explore a hidden, underground temple in search of the fountain of youth, Tater helps Echo learn about monkey behavior, and Ivy helps Slab prepare for his first ever cover model photo shoot. All roads lead to a confrontation with a local fancy hat factory owner, who has been keeping a secret from the villagers for generations. In the end, Adam gets the gang back to Finnegan, just in time for graduation.