Terry Lynch is the toughest and bravest fireman in New York. On his night off he tries to save a little girl from a blazing tenement and gets, badly injured in the process. The authorities won't pay a cent's compensation just because he wasn't on duty at the time. But they never reckoned with his kid brother, Jimmy. He proceeds to wage a one-man war against the Town Hall, the corrupt Mayor and his trigger-happy Head of Security. And all he has is a slogan and a spray can…