Barney and pals help Baby Bop search for her pet caterpillar, Monty, who has disappeared. Also: Riff, who doesn't want to be around bugs, is less than thrilled when BJ turns the caboose into a bug zoo.
The gang goes to a shapes carnival, but Riff thinks he won't be able to play any games after he loses is lucky medal. Elsewhere, Baby Bop sees a rainbow, but it disappears before she can show her friends. So Barney and the others paint a new rainbow.
B.J. and Baby Bop help Barney prepare for a footrace by showing him how to stretch his muscles. Also: B.J. feels sick after eating too many sweets, so he takes a nap, only to dream of eating more sweets.
B.J. flubs a paint job on a caboose, so Barney shows him that everyone makes mistakes from time to time; Barney teaches Baby Bop how to deal with separation anxiety when she misses B.J. and Riff, who are on a camping trip.
Barney teaches his friends about the days of the week to help pass the time as they wait for a petting zoo to arrive in town. Also: Riff and Baby Bop hold a sale in the park to raise money for a new scooter for B.J. after Riff wrecks his pal's old one.moreless
Riff loses his drumsticks, but he's sure he left them in one of the neighborhoods he visited, so Barney helps him remember those places. Also: Baby Bop tries to decide what profession she will have as an adult.
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