The play begins with MC Dog realizing they are in a play. They get roller skates and begin to skate around the stage. As the dog skates, they are joined by other dogs on scooters, bikes, and wagons. There are big dogs, little dogs, black, and white dogs. They go in and out of the doghouses on the stage.

Hattie the dog enters wearing a lovely little hat. She asks MC Dog if he likes her hat. He says that he does not, and Hattie exits.

MC Dog enters on of the doghouses and reemerges with two copies of the iconic Go, Dog Go! book, one in English and one in Spanish. He reads and shows the audience the early pages of the books. As he reads, a Red Dog pushes a Blue Tree onstage. A Blue Dog pushes a Red Tree onstage. A Green Dog pushes a Yellow Tree onstage.

A Yellow Dog enters looking for their tree, but there is no tree for Yellow Dog. The dogs sing about their trees, but there is still no tree for Yellow Dog. The dogs play a version of “musical trees” – rushing toward the closest tree, but when the music stops, Yellow Dog is once again without a tree.

Yellow Dog pouts, then makes a plan to sneak up on one of the trees when the other dogs are not looking. However, the other dogs are hiding behind Yellow Dog. There is another round of “musical trees,” and Yellow Dog is once again without a tree. Yellow Dog is chased offstage by the other dogs. He reappears holding an enormous yellow sun.

The sun is up, and it is time for work. MC Dog prepares blueprints for the job site. Red Dog arrives and helps. They put two ladders in place. Red Dog brings in a long wooden plank. The plank is put in place, resting on the two ladders. All of the dogs begin working with tools, picks, shovels, wheelbarrows, and buckets. One of the dogs does a rhythmic solo on the plank with their tools. The work begins to slow way down because the dogs are getting tired.

Blue Dog enters with a jackhammer. The jackhammer doesn’t do the job at first, but the other dogs encourage Blue Dog to keep trying. The jackhammer gets out of control. The dogs safely take the jackhammer from Blue Dog, but Blue Dog’s hands are still shaking. The dogs team up to help with the shaking, which passes through each of them like an energy source. The shaking ends up with MC Dog, who manages to place the shaking under the welcome mat to the doghouse, then jumps on the mat. The shakings stop, and they are relieved. The dogs clean up the job site with brooms. The lights suddenly shift and illuminate a dog driving a car moving across the stage.

The dogs begin to eat their lunch at the wooden plank. They begin to trade their sandwiches with each other. The trade ends with one of the dogs tossing all of the sandwiches over their shoulder. Yellow Dog catches them and threatens to run off with them. Instead, Yellow Dog hands out the sandwiches to the dogs individually and gives one to the Musician. This leaves Yellow Dog without a sandwich. Green Dog pulls out a small saw and cuts their sandwich in half. Green Dog gives half the sandwich to Yellow Dog.

As they begin to eat, Hattie appears again riding a small scooter. She has a new hat. She asks MC Dog if he likes her hat. He does not. Hattie removes the feather from her hat and hands it to MC Dog. She scooters away.

The dogs continue eating lunch. Green Dog produces a large salt shaker. Green Dog shakes salt onto their sandwich, and it makes a loud “shaking” sound. Yellow and Blue Dog do the same thing, but when Red Dog tries, there’s no sound. The dogs try the shaker on Red Dog’s sandwich, and it works fine. Red Dog tries again, but nothing happens. Frustrated, Red Dog tosses the salt shaker offstage. It flies back on, and Red Dog catches it! Red Dog tosses it again, but this time, a baseball flies back.

Red Dog catches the ball and stares at it amazed. The baseball is passed down the line of the lunch counter to Green Dog who tosses the baseball offstage. It flies back on from the other side of the stage, and Red Dog catches it. Once again, it gets passed down the line, and Green Dog tosses it offstage. This time, a larger, volleyball-size baseball flies in from the opposite side. Red Dog catches it and passes it down the line. Green Dog tosses this larger ball off stage. All the dogs now turn, expectantly, to the opposite side. A huge, beachball-size baseball flies in, and Red Dog catches it.

The dogs set up a baseball field and begin an improvised baseball game. They include the audience as part of the fun. The huge baseball is hit into the audience who are encouraged to send it back onstage to get the batters “out.”

The game is interrupted by another dog driving a car across the stage. The dogs watch it pass, curious about where it’s going.

When the car is gone, the dogs prepare to play baseball once again. MC Dog tosses the huge baseball offstage and instead makes an invisible baseball! Green Dog pitches the invisible ball in slow motion, and Blue Dog hits it with the bat. They follow the arc of the invisible ball as it descends onstage where MC Dog stands, holding a bucket of blue paint. MC Dog tosses the blue paint onto the expanse of the stage, saying “splash!”

It is now night on the water. Spotted Dog swims onstage. Yellow Dog goes down a slide, landing in the “water” below. The dogs swim together and away offstage as a rowboat appears with three dogs in it. They sing a song. As the song concludes, they blow out their lamp and then turn and blow out the moon.

It’s now bedtime. Yellow Dog and Spotted Dog are pretending to be asleep. MC Dog switches off the lights, and Yellow Dog and Spotted Dog immediately open their eyes and produce noisemakers from under their blanket. They happily make noise! MC Dog switches the lights back on, and the other dogs immediately pretend to sleep once again. MC Dog turns the lights off once again.

The blanket gets lifted and forms a miniature circus tent. The dogs create a miniature carnival. A carousel appears and the dogs go around and around. MC Dog turns the lights back on and tells them that night is not a time for play.

Now it is day, and the dogs join in a joyous “day dance.” The dogs dance their way offstage, leaving Blue Dog alone in the middle. Blue Dog is asleep. Blue Dog wakes up to find that they are alone. They pull a copy of Go, Dog Go! from under their pillow and begin to read. Blue Dog recreates parts of the play on their own, but when they turn to blow out the moon, a round spotlight appears on the back wall.

Blue Dog ducks under the spotlight and blows air up at it. It begins to lift and float across the stage. Blue Dog chases the spotlight and playfully taps it and kicks it, keeping it from falling to the ground. Next, Blue Dog stretches the spotlight to make it bigger and then lifts it up until the entire stage is lit with daylight. Blue Dog calls out to the other dogs, but no one comes. Until finally, Yellow Dog zooms across the stage, driving a car. Blue Dog rushes offstage, following Yellow Dog.

The dogs drive around the stage in cars. Hattie appears in a skiing outfit. She asks MC Dog if he likes her hat. He does not. She skis away. The dogs continue to drive around the stage. Blue Dog and Yellow Dog have a slow-motion, head-on crash. They begin an animated argument. MC Dog enters wearing a safety vest and stops the argument. They continue driving.

MC Dog appears with a traffic signal. The signal reads “Red/Stop.” The dogs screech to a stop to let a small bird cross the stage. When the bird is gone, the traffic signal turns to read “Green/Go.” The dogs drive and dance and sing once again until the signal turns to red again. This time, Hattie enters with a different hat. Once again, MC Dog does not like her hat. She exits, and the dogs continue to drive. They drive offstage, and Hattie wonders aloud where they are all going.

On the now very dark stage, MC Dog appears with an oversize copy of the Go, Dog Go! book. He opens the book and shows the audience that they are all going to a big tree. All the dogs appear wearing party hats. They are having a dog party!

A huge birthday cake is brought onstage, and behind it, Hattie is revealed wearing the grandest hat of all. She sings a song about her hats. At the end of the song, MC Dog admits that he finally likes her hat.

A big gift box is placed in front of MC Dog. He opens the box but finds only bubble wrap in side. The other dogs place the long strip of bubble wrap on the ground and start doing a bubble wrap tap dance.

A small cannon is rolled onstage. Yellow Dog lights the fuse, and the cannon explodes with confetti streamers.

As the song comes to an end, we see MC Dog and Hattie sitting in one of the cars with the other dogs surrounding them looking on. MC Dog and Hattie wave to the audience saying, “Goodbye” and “Adiós.”