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 school speaker talks about the danger of germs.

Alvin thinks Theodore's teddy bear can tell the future, and 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.

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, the chipettes prank Alvin back.

Simon creates a drone that can not only deliver pizzas, but has the ability to learn.

Alvin worries that the munks are responsible for making Dave boring when they find out he used to be a rock star.

Theodore's teddy bear is bear-napped, forcing the boys to work with Officer Dangus to get him back.

Alvin starts stealing the morning paper to sell at school, but Dave blames the paperboy and refuses to pay up.

Brittany's furious when she thinks Alvin has been writing on her blog and vows to get him back.

Brittany's dream of being a fashion designer turns into a nightmare when her ideas are stolen.

Coach Dobkins challenges Miss Smith and her ragtag team of outcasts to a baseball game to see who's the best.

A favorite toy of Theodore's is lost on a rafting trip but then mysteriously shows up at the house, and it's alive.

Miss Croner attempts to help Theodore discover his true calling in life.

Jeanette is suddenly the clumsiest person on the planet. Is there something wrong with her - or her new glasses?

Theodore gets roped into doing Alvin's babysitting sitting job with a spoiled four year old.

Kevin agrees to be Alvin's assistant to get closer to the music industry, but ends up running errands instead.

When Theodore discovers Alvin and Simon have a secret club, he promises not to tell anyone if they let him join.

Dave promises to take Alvin to a water park if he gets a good grade on his test, but then a crow steals it.

When Alvin accuses Dave of yelling at him too much, a therapist moves in to help Dave control his anger.

Alvin accuses Dave of yelling at him too much, so a therapist moves in; when the school digs up an old high school time capsule, Miss Smith and Dave work together to keep an old secret.

The Chipmunks and Chipettes team up together to compete in a dodgeball tournament. They learned that an opposing team has an unfair advantage using technology. Later on, they discovered that an enraged Theodore could be their secret weapon.

When Theodore mistakenly thinks he's the oldest brother, he tries to be a better role model for Alvin and Simon.

Dave is thrilled when he thinks he's nominated for a Grammy, but it's actually an award for aging musicians.

Theodore helps Simon to try and get past his perfectionism in order to complete an art assignment for art class.

The boy's imaginations run wild when Dave disappears. When they finally find him, they're convinced he's a zombie.