The trucks of Crushington Park School are wary of their new classmate, Meteor.
Meteor finds the courage to admit to his friends that he misses his mother when she leaves on a space mission for Mars.
Meteor manages to help Junkboy get over his fear of water (and soap!) by taking the filthy little garbage truck for a fun-filled trip to Gunkbusters.
Meteor and Jose receive a `time out' for crashing into a very special starting light that was once used at all the big races. While the boys think they're being reprimanded for damaging the light, they soon realize it was for their lack of teamwork.
Little Tow invites the kids over for a sleepover party the night before a big race. However, the next day, only Amby, who didn't go to the party, and Pony, who managed to go to bed on time - are rested enough to actually run the race.
Too caught up in his own skills as a racer, Jose fails to listen to Pony, his partner during a race, and as a result ends up belly up in a gunk pond instead at the finish line.
After watching a monster truck monster movie called "King Krush", the trucks scare themselves into believing that the movie monster is real, and is waiting for them at the school.
Engines get overheated when Meteor accuses his friends of stealing the prized racing pennant given to him by his father - only to learn that he dropped the pennant during an earlier race.
Little Tow intentionally gets his friends stuck in the muck during a game of `follow the leader' so that can tow them out. However, when Little Tow finds himself stuck up to his axles in mud and needs help, his friends fear he's playing another trick on them.
The trucks learn a valuable lesson about safety and rules when they enter a restricted area of the junkyard and Meteor is accidentally suspended over the car lot by a magnet and crane.
Thinking that Big Wheelie's latest time-trial race is way too hard for a little monster truck like him, Amby fakes sick by pretending to overheat his engine in order to avoid it.
When Meteor gets stuck in an extra-deep mud puddle and Junkboy thinks it's his fault - he withdraws, leaving Meteor feeling hurt. It's only when Junkboy finally admits what he did that he learns he's not to blame after all.
Meteor volunteers to pick up the tickets for everyone to see The Crushmeister, one of the most famous monster trucks in Crushington Park. However, when Meteor gets too involved playing with his friends and the tickets sell out - Big Wheelie comes through by arranging for the trucks to meet their idol, which just happens to be an old friend.
Meteor must learn not to be a bossy leader when he's chosen by Big Wheelie to lead his friends in creating a new 'Big Finish' for the school race track.
Meteor realizes that if he doesn't get something right the first time, it's practice that will make it perfect.
Meteor learns how important it is to learn the basics instead of relying on technology, when he accidentally damages one of the video screens he was relying on to win 'the backwards race' - a course run entirely in reverse.
Little Tow becomes utterly enamored by an old hook of Bigfoot's that he's found in his backyard. When the little truck attaches the huge hook in place of his own and is unable to tow one of his friends out of the muck because of its size, LT learns that you can't rush growing up.
Meteor becomes upset when his friends sneak around on him during a game of hide and seek - only to learn they were being so secretive in order to set up a surprise party for his birthday.