The Looney Builders are hired by Mac Gopher to build a hot air balloon for him and Tosh to ride in for a festival. Tosh keeps his fear of flying to himself and tries to weigh down the build to avoid liftoff.

The Looney Builders build a baseball field, but both Bugs and Lola want to be the pitcher for the big game later. They attempt to prove themselves as they work, causing setbacks with the build.