After hearing MK mentioning a Peach of Immortality, Pigsy questions him and Mei on what they were talking about, causing MK and Mei to get mad at Pigsy for not knowing what the Peaches of Immortality are. Tang then explains that the Immortal Peaches grew in the heavenly realm and were protected by the gods before being taken by the Monkey King so he can become immortal. When Pigsy said that he thought that the Monkey King was already immortal, Mei says that doesn't matter and that the winner of the next Great Wall Race will win an Immortal Peach.
Meanwhile, Red Son tells the Demon Bull King and Princess Iron Fan about the prize of the Great Wall Race. However, when the Demon Bull King and Princess Iron Fan rejected Red Son's idea about winning an Immortal Peach, Red Son leaves in frustration and decided to win the Peach of Immortality for himself. Although, the Demon Bull King and Princess Iron Fan changed their minds at the last minute so they can beat their son at the race.
After getting into an argument about who would win the race, MK and Mei challenge each other at who's the better racer. As the race was about to start, they meet up with Red Son and the Gold and Silver Demons. However, as the Demon Bull King and Princess Iron Fan joined, majority of the racers and the commentator fled, giving Jin and Yin a chance of being the commentators and change the racetrack. Once the race started, MK, Mei, and Red Son were able to go through the race just fine while DBK and Princess Iron Fan had to go through a mountain instead, as they weren't able to make one of the race's quick turns.
When MK accidentally destroyed the two vehicles, he apologizes to Mei for getting carried away and soon gets the idea to create the Cloud Roadster for the both of them. While the Demon Bull King and Princess Iron Fan had to quit the race after the former remembered his imprisonment, MK and Mei were able to cross the finish line after creating the Cloud Roadster and beat Red Son.
After the race ended, Red Son claimed that he should've won the race to MK and Mei. However, he and MK soon realized that Peach of Immortality was actually just a regular trophy, and the "immortality" actually represents the winner having a picture taken of them on the Great Wall.
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