A single father experiences the trials and tribulations of raising a group of young chipmunks who are also famous rock stars touring the world with their best friends, the Chipettes.
A favourite toy of Theodore's gets lost on a rafting trip. And, when it mysteriously shows up at the house, it's alive. (S4, ep 1)
Miss Croner attempts to help Theodore discover his true calling in life. (S4, ep 3)
Jeanette is suddenly the clumsiest person on the planet. Is there something wrong with her - or is it her new glasses? (S4, ep 4)
Theodore gets roped into doing Alvin's babysitting job, which involves looking after a spoiled four-year-old. (S4, ep 5)
Kevin agrees to be Alvin's assistant to get closer to the music industry, but ends up running errands instead. (S4, ep 6)
When Theodore discovers Alvin and Simon have a secret club, he promises not to tell anyone if they let him join. (S4, ep 7)
Dave promises to take Alvin to a waterpark if he gets a good grade on his test. But things go wrong for Alvin, when a crow shows up. (S4, ep 8)
A cute singing bird replaces Alvin in the band after Alvin makes too many demands as a performer. (S4, ep 10)
Pirate's Life: When pirates show up at the house, the boys do all they can to protect a treasure chest that arrived for Dave. (S4, ep 11)
The Chipmunks and Chipettes compete to set a world record in hope of winning a new virtual reality game. (S4, ep 12)
When Alvin talks Dave into buying a used tour bus, Dave has no idea of the problems ahead. (S4, ep 13)
Alvin accuses Dave of yelling at him too much, so a therapist moves in to help Dave control his anger. (S4, ep 15)
When the school digs up a time capsule, Miss Smith and Dave work together to keep an old secret. (S4, ep 16)
Munk vs Machine: The Chipmunks and Chipettes compete in a dodgeball tournament, but no-one expects Theo to be their secret weapon. (S4, ep 17)
The Chipmunks find a shack that magically fills with toys and games, but is it magic or something more sinister? (S4, ep 18)
When Theodore mistakenly thinks he's the oldest brother, he tries to be a better role model for Alvin and Simon. (S4, ep 19)
Dave is thrilled when he thinks he's been nominated for a Grammy, but it's actually an award for ageing musicians... (S4, ep 20)
No Putts No Glory: Alvin's plan to tricks Theodore into believing he's great at mini golf backfires when Theo signs up for a tournament. (S4, ep 21)
Alvin and Kevin pretend to be sick to miss school and sneak off to the Dagarack Convention. (S4, ep 22)
When an exchange student comes to visit, he tells a scary story that makes the Chipmunks think Dave is in danger. (S4, ep 22)
Annie and Amber offer to plan Brittany's birthday party, pitting her against Jeanette and Eleanor in the process. (S4, ep 23)
Simon needs to complete an art assignment but his perfectionism is seriously slowing him down. Can Theodore help? ( S4, ep 24)
Simon has a crush on the babysitter and secretly prepares a romantic dinner. Meanwhile, Theodore battles to distract Alvin. (S4, ep 25)
To land the lead role in a play, Alvin wagers Brittany that he can remain in character as a shoe cobbler. (S4, ep 26)
When Brittany becomes convinced she's a long lost princess she carries her new royal status a little too far. (S4, ep 28)
Coach Dobkins kicks Cheesy and Theodore off the track team for being slow, but Theodore is determined to compete. (S4, ep 29)
To celebrate 'World Day' and win a trip, the Chipmunks each get a country to represent for a school presentation. (S4, ep 30)
While training for a TV baking competition with Eleanor, Theodore develops an allergy to an unknown ingredient. (S4, ep 31)
When Derek overhears that Alvin and his brothers are alone for the weekend, he plans a wild party at their house. (S4, ep 32)
After a lice outbreak closes the school, Dave sets up a classroom in the house and acts as the boys' teacher. (S4, ep 33)
Jeanette and the Chipmunks orchestrate a break-in at Bocarter's house to rescue a chimpanzee he keeps in a cage. (S4, ep 33)
Dr Zap vs Electroboy: Theodore is hit by lightning and believes he's like his comic book hero, until he's told he's actually a villain. (S4, ep 37)
The boys disobey Dave's order to not play a dangerous game then have to hide their injuries when they get hurt. (S4, ep 35)
The school newspaper has a sudden increase in sales when a gossip column appears poking fun at other students. (S4, ep 36)
Alvin is alarmed that Dave will be hosting an auction where he'll have to tell jokes because he's not that funny. (S4, ep 38)
Alvin sneaks into Simon's new virtual reality game and is transported to a world in desperate need of a hero. (S4, ep 39)
The chipmunks discover Officer Dangus has a twin brother that's a bully and encourage Dangus to stand up to him. (S4, ep 40)
The Last Day of Summer: Alvin wastes his entire summer playing a video game then tries to do all the fun things he'd planned in one day. (S4, ep 41)
Simon invents a robot with emotions and an ability to learn which backfires when he's exposed to the internet. (S4, ep 42)
After caring for a sick Brittany, Eleanor and Jeanette wonder if Brittany would care for them if they were sick. (S4, ep 43)
The chipmunks try to keep Dave from getting on the internet after a performance he posts gets negative comments. (S4, ep 44)
The chipmunks, along with Kevin and Cheesy, decide to crash BoCarter's birthday yacht party after not being invited. (S4, ep 45)
Dave gets an "Instant Gram" account and after several embarrassing posts, Alvin does all he can to stop him. (S4, ep 46)
The Chipettes fall in love with a cute little mouse that's doomed to be fed to a snake as part of a science class. (S4, ep 47)
Simon's new invention threatens to destroy the world, creating a time loop and changing gravity inside the house. (S4, ep 25b)
When Dave takes away Alvin's phone, the boredom Alvin experiences is enough to drive him crazy. (S4, ep 49)
When Alvin kidnaps Simon's robot Geizmo, he gets a lesson in parenting a child going through their terrible twos. (S4, ep 50)
A Very Merry Chipmas - Part 2: Theodore is mistaken for an elf and whisked off to the north pole to help build toys in Santa's workshop. (S4, ep 52)