Gito Prawoto, Dede Rifai, Kuncoro Prasetyo and Rojak Panggabean are under threat of expulsion as they have not paid their tuition fees for four semesters. The campus allows them to stay in school if they pay at least one semester’s fee within a few days. Kuncoro then suggests that they find a rented house near the campus and live a simple lifestyle to save money. Gito also suggests being firemen, a part time job that is less tiring and takes up less time. After the training, they are accepted to work part-time at the Fire Department as a Reserve Unit. They are given minimal equipment and are assigned to an old fire truck, Si Jago Merah. When a real situation faces them, their heroic and selfless acts make the mayor of the city give them an award.