As a young boy, Daigo Asahina almost died in a fire until he was saved by a courageous firefighter who saved his life. Ever since then, Daigo's heroes have been firefighters and he has always dreamed of becoming one. Newly graduated from firefighting school, the brash and cocky novice firefighter Daigo is horrified to discover that he has been assigned to a small and sleepy Company M where fires hardly ever occur. He is dismayed to find out that his fellow firefighters are all slothful and lazy slackers, and blames the laid back Captain Gomi as the reason behind their disdainful behavior.
But Daigo will soon learn that being a firefighter is a lot harder than he ever imagined and he must conquer his fears if he is ever to become a true firefighter.