Zombie Wrex and Zombie Monster Jam Monster Trucks are working at the park. Their job is to make sure that all of the zombie slime was cleaned up after a group of box zombies played there while making a video with The Axel Show. After they finish their tough job of ramping around the park, Brooks invites them to check out his new Monster Jam Day Spa.
At the spa they relax several therapeutic treatments including playing in piles of kinetic sand, splashing around in Orbeez, sitting inside of a colorful volcano eruption, wearing play-doh masks, and playing in zombie slime.
