When her two younger siblings are too disruptive in the house, Carmen tricks them into going outside to play. Salvador, the middle brother, and María, the baby sister, go their separate ways to build their own houses. Elsewhere, the Wolf (Lobo) is hungry and wandering though the forest; he comes upon María's house of straw. He tries to be polite, but nearby flowers cause him to sneeze her house down. She flees for her life to Salvador's house of leaves and flowers. But his house is also no match for the Wolf's allergies, and the siblings run back home. When Carmen realizes that the Wolf simply wants a hamburger (and not ham), she invites him in. Unfortunately, their neighborly lunch is disrupted when Carmen offers the Wolf flowers, with predictable results.
Little Red Riding Hood (Caperucita Roja, played by Niña) meets the Wolf (el Lobo) on the way to Grandmother's (la Abuela) house. After seeing that she is bearing many treats, the Wolf hatches a plan to steal them that leads to taking both Little Red Riding Hood and Grandmother prisoner. Lucky for them, Salsa witnesses everything and tells a policeman, who saves the day.
The Three Bears (Los tres osos) go up against The Three Goats (Los tres chivos) for a third time in an elaborate production of "¿Qué es?" ("What Is It?"), but a case of the hiccups is giving Papa Bear (Papá Oso) fits. The Monster (el Monstruo) tries to help Papa Bear by scaring him with-of all things-a monster disguise, but it fails. In the ensuing competition, Papa Bear attempts to cure the hiccups by breathing into a bag, holding his breath, blowing up a balloon and, finally, drinking water. The bears come from behind and win, but the real winner is the hiccups, which still plague Papa Bear.
The Monster (el Monstruo) decides to buy shoes for the big dance, but first he must find a pair he likes. The shoe salesman entertains the Monster with a funky rap about the many varieties of shoes for sale. After a green and blue pair of shoes prove to be ill fitting, the salesman produces a red pair of dancing shoes that fit the Monster perfectly. At the masquerade ball, the Monster dances with the Girl (Niña) until her purple hair is revealed and scares him away. He leaves a shoe behind. The Girl searches for its owner and finds it to be the Monster.
Mama Bear (Mamá Osa) and Baby Bear (Bebé Oso) board Miss Train (Señorita Tren) for a ride back home, but their journey is cut short by three masked bandits-actually the Girl (Niña), Little Rat (Ratoncito) and the Sock (Mosca)-who are out for ice cream. The bandits have a difficult time obtaining the ice cream, but finally manage to uncover it on their third attempt. Salsa tells the Sheriff, played by Papa Bear (Papá Oso), who then challenges Little Rat to an ice-cream-eating duel. When Little Rat gives up, the Sheriff wins.
With a handful of grapes, Armadillo becomes Super Armadillo! Faster than a speeding train, able to leap three bears in a single bound, Super Armadillo arrives on the scene in his somewhat clumsy manner to save other characters from peril. With a little help from Salsa, Super Armadillo returns a hamburger to the Girl (Niña) and a carton of milk to Little Rat (Ratoncito), and unties Mama Bear (Mamá Osa) from a railroad track. All is the dirty work of the Wolf (el Lobo), who is vanquished in the end.
The Three Goats (Los tres chivos) are going on a vacation, using little Miss Train (Señorita Tren) as transport. But first they must pack their things. Ten books, ten shoes and ten grapes put a strain on Miss Train, who cannot go forward. After the weighty cargo is ditched, the journey begins. But time and again, The Three Goats must return for items they have left behind-cake, ice cream and milk. The Three Goats reach the end of their trip; then Medium Goat (Chivo Mediano) and Little Goat (Chivo Pequeño) reach the end of their tempers when they discover that Big Goat (Chivo Grande) has eaten everything.
Four trains-an old one, a red one, a big one and a little one named Miss Train (Señorita Tren)-decide to have a race. Miss Train, clearly an underdog, is the slowest train out of the starting gate. Soon after the race begins, the old train stops to eat cake with The Three Bears (Los tres osos) in the forest and becomes ill from all he has consumed. Then the red train purchases a book from The Three Goats (Los tres chivos) and wrecks while trying to read and race at the same time. Finally, the big train pulls over to rest, but accidentally falls asleep. Miss Train, slow but steady, wins the race.
On a dark and stormy night, the Dog (Perro) reads the mysterious story of "The Hands" ("Las manos"). The Female Cat (la Gatita), Little Rat (Ratoncito) and the Wolf (el Lobo) are chosen to act out parts. In the story, each of the characters rouse themselves to raid the refrigerator, but mysterious hands appear to steal their food away. All of the characters are frightened by the story and are relieved at its end. When Mama Bear (Mamá Osa) serves cake, the story seems to come to life as the mysterious hands appear once again! The Dog reveals that "The Hands" are actually the two squirrels in disguise.
The Three Bears (Los tres osos) and The Three Goats (Los tres chivos) meet again for the "What Is It?" ("¿Qué es?") game show. After an enthusiastic greeting breaks the glasses of Medium Goat (Chivo Mediano), he has trouble identifying things. He thinks a pencil is a banana, for instance, and mistakenly identifies the Female Cat (la Gatita) as a dog. The Three Goats eventually win the grand prize, a book, only to have Big Goat (Chivo Grande) eat it.