We Are the Heavy-duty Circus Joy the magician is having a "Joy's Magic Circus Show" with the world-renowned circus cars but it looks like the circus master can't make to the show anymore. Poco, Billy, Max and Chris are bored of their daily routine of work at the construction site. During a short break after work, they perform some acrobatics and they are pretty good! Joy the Magician is impressed at what they can do.