In the center of the plot Moero Downhill Night there is a guy named Akito, a student at an ordinary college. He recently managed to get a job, which allows him to earn extra money and cover the costs of his favorite hobby. His hobby is racing games. Recently, the main character has cooled off to his favorite activity and tried to find something new for himself that will help him pass the time and regain the meaning of life.

On a normal sunny day, Akito meets his friend and partner Rink, a semi-professional racer who participates in the Yotsuya Four Knight league. Together they decide to go for a ride, but suddenly they are stopped by punks who challenge them to a duel. Akito decides to show off his abilities, developed over his previous experience. He is given a chance to show and use his driving skills.

The first part of the franchise sends the gamer to participate in car races with various drivers, improve reputation and open access to more famous championships and races. The gameplay is typical of the visual novel genre, and the user will have dozens of opportunities to make a choice. Competitions take place in real time, and the user will need to go through a serious and difficult path of a racer, or pave his own way to love and romance.