The tale begins when Dr. Suzana, under the supervision of Prof. Dr. Taib Siron, created a machine named BS21 which is capable of reading people's minds. The machine would be very much useful for millitary use but would be very deadly if it were to fall in the wrong hands. The most feared incident happened when Cat and his sidekick Kupan stole BS21 from Dr. Suzana's lab. One of the eyewitness who saw the incident was Hashim a security guard at the lab. Another thing that they don't know about the machine is that it is also capable of granting wishes those who use the machine.

The story is about a Mat Rempit named Madi who works as a dispatch boy by day and street racer by night. As a Mat Rempit, his activities at night include street racing and performing various Mat Rempit stunts such as the wheelie, Superman, wikang, etc.

Friendship between five companions sekampong , alias , Abu ,Mawi , Budi and Illa threatened by the arrival of a new girl from the city, Zurina.