Dave, Simon and Theodore are worried for Alvin's safety after Alvin enters a karate contest.
When Alvin suspects Simon is Dave's favorite, he and Theo challenge Simon to a go-cart race to win Dave's favor.
Everyone thinks Simon has lost his mind after he fails a school test and moves into a tree for some alone time.
Alvin worries about his bad report card and does everything he can to intercept the mail before Dave sees it.
Theodore gets stuck taking care of Miss Croner's cats during a week Dave wants the boys to focus only on school.
The Chipettes challenge the Chipmunks to go three hours without their favorite things. How hard can it be?
When Alvin is accused of revealing spoilers for everyone's favorite TV show, he agrees not to speak for 24 hours.
When Alvin and Simon think Theodore's pet goldfish has died, they go all out to replace it before he notices.
Alvin and Brittany learn parenting isn't easy when they have to care for a robot baby for a school assignment.
When Alvin's soccer team struggles, the coach makes the team learn ballet to help with their conditioning.
Alvin thinks he's losing his mind when Simon goes missing and no one else even remembers who Simon is.
When the girls at school cast votes for the cutest chipmunk on the bathroom wall, Alvin worries about the results.
Theodore gives Dave an ugly handmade vest for his birthday and insists he wear it to an upcoming business meeting.
When Theodore finds a winning lottery ticket, everyone has their own ideas on how the money should be spent.
Simon is alarmed to discover he's been tagging private property in his sleep and its inspired a group of copycats.
Alvin's luck goes from bad to worse after Theodore finds a four-leaf clover and everything starts going his way.
Alvin gets a taste of his own medicine when he pulls one too many practical jokes on Simon.
When Miss Croner finds termites have infested her home, she moves in with the chipmunks and drives everyone crazy.
When the boys accidently break Dave's new flat screen TV they decide to become fugitives on the lam.
Jeanette and Eleanor act as Sherlock Holmes and Watson when Theodore's teddy bear mysteriously disappears.
When the boys get tired of taking orders from Dave, they decide to build a treehouse in the backyard and move out.
When an invention of Simon's accidently gets knocked over it magnetizes Alvin and Simon making them inseparable.
When the boys get stuck with Miss Miller as a babysitter, they each take a crack at finding a replacement.
Alvin volunteers to caddy a charity golf tournament and surprisingly gets paired up with Miss Smith.
Alvin and Brittany get stuck alone at the school with a ghost they think roams the halls, or is it something else?
Alvin passes off a rock he found on the ground as a meteor for a science project and gets some unwanted attention.
Dave discovers he's not too good at roughing it outdoors when he goes on a day hike with the Chipettes.
When Alvin pranks Simon with a trick website making it look like Alvin is smarter, the chipettes prank Alvin back.
Dave gets temporary amnesia so the boys trick him into letting them skip school and go on a ski trip instead.
Theodore becomes obsessed with cleanliness after a speaker at school talks to the class about the danger of germs.
The town is under attack when Simon creates a drone that can not only deliver pizzas but has the ability to learn.
When Alvin thinks Theodore's teddy bear can tell the future, Alvin goes all out to make Talking Teddy his friend.
Alvin lies to Theodore about a fake holiday to get out of chores, so Dave forces Alvin to make the holiday real.
Alvin worries the munks are responsible for making Dave boring when they find out he used to be a rock star.
When Theodore's teddy bear, “Talking Teddy” gets bear-napped, the boys work with Officer Dangus to get him back.
When Alvin starts stealing the morning paper to sell at school, Dave blames the paperboy and refuses to pay up.
Alvin bets Bo Carter that alien life exists and only has a week to prove it or suffer embarrassing consequences.
Brittany's furious when she thinks Alvin has been writing on her blog and vows to get him back, but was it Alvin?
Simon's experiment of how plants respond to positive or negative feedback creates a monster, and it's growing.