It's Bertrum's fifth birthday - the day he changes color. He worries, if he looks different, will he be different?

When Mr. Rutabaga hurts his knee, Bertrum and the kids agree to pick up Munchetti. They learn about community when they get some unexpected help.

When Mrs. Flynn's rooster, Lenny, overhears how everyone loves dogs and cats, he tries to transform himself into their favorite pets.

Raimundo is too small to go on the Bunt's train ride! In trying to make himself bigger, Raimundo discovers the real value of being himself.

At a sleepover, Gibby is so afraid of the dark, she tries to stay up all night. Raimundo pulls out his guitar and sings a song, helping Gibby get over her fear.

Bertrum, Raimundo and Gibby learn to stand up to Clayton's bullying by speaking up for themselves.

Betrum learns about being a good loser, when Gibby unexpectedly wins the Munchetti Festival Art Contest.

When Raimundo and Gibby start to compete to be Bertrum's best friend, he shows them a way they can all be best friends.

Bertrum can't believe all the other kids get to stay up later than he does. Brisbo, Bertrum's imaginary friend, shows him the value of a good night's sleep.

Bertrum only wants to play with his imaginary friends, but when Gibby and Raimundo help him look for his magic mirror, he finds out what friendship truly means.

When Clayton wrecks Bertrum's bicycle cart, Bertrum begins to realize his own mistake in not taking better care of Aunt Cordelia's paintbrushes.

When Bertrum helps his dad in the Ice Cream Shop, he feels too grown up to play with Gibby and Raimundo anymore.

When Bertrum and Gibby have an argument, Raimundo helps them see that a difference of opinion doesn't mean you still can't be friends.

When Raimundo's grandmother, Abuela, comes for a visit, the kids learn that there's more than meets the eye when it comes to older people.

Bertrum learns that having a bad day doesn't mean it's going to last forever.

Bertrum and Raimundo learn the effect of harsh words spoken in anger, when Mr. DeLiver considers quitting his job delivering the mail.

Bertrum starts to doubt his Aunt Cordelia's love when the postcards she promised to send him every day while away on a trip, fail to show up.

Gibby is determined to win a ribbon at her first field day. She really wins when she learns the meaning of good sportsmanship.

When Bertrum's failure to clean his room leads to him stepping on his new kite, he learns the hard way the value of picking up after himself.

Bertrum's special day with his mom is cancelled when Bertha gets a big cold. Bertrum ends up having a special day with his dad, taking care of his mom.

Bertrum learns about trust, when Clayton accidentally overhears Bertrum tell Raimundo a secret that Gibby had told him in confidence.

After the class visits the Bunt's farm, Bertrum and Raimundo are asked to draw a thank you card, but can't agree on what it should look like.

Bertrum learns about other family traditions when his mom and dad replace his favorite Munchetti holiday with Raimundo's harvest festival.

When Bertrum loses at checkers three times in a row, he starts to take his frustration out on anyone and anything that gets in his way.

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When Bertrum's great idea of making a float for the Happy Wumbler Day parade turns out to be more hard work than he counted on, he wants to quit.