Curtis Sliwa rose to fame in the 1970s and 80s when he set up the 'Guardian Angels': a group of young New Yorkers committed to reducing crime in the city. 40 years later, he is in the running to be New York City's mayor. As Curtis travels the city on his campaign trail leading up to the Republican primary, the essence of his motivation emerges: a deep love for the city and everything it stands for.