Mater is a rock star in a heavy metal band. He starts out in a garage band and rises to the top with his hit song, "Dad Gum." Lightning McQueen joins him on stage in the middle of a huge concert and they rock into history.
Mater ends up in Tokyo, Japan after offering to tow home a stranded Japanese car all the way across the Pacific Ocean. After arriving in Tokyo, Mater is challenged to a race by the Drift King Kaubto, to determine the "King off All Drifters." The loser of the race will be stripped of all custom modifications, and become a "stock" car. During the race, "Lightning Dragon McQueen" shows up to help Mater defeat a pack of Kabuto's ninjas, and possibly win the race. moreless
Mater is a firetruck who rescues Lightening McQueen from a burning building. Mater rushes Lightening to the hospital where Lightening realizes that Mater is not only the fire truck, but the doctor too.