Inspired by Eric Klineberg’s book, Heat Wave: A Social Autopsy of Disaster in Chicago, Peabody Award-winning filmmaker Judith Helfand takes a hard, personal, and often quirky look at the inequity of natural disaster, beginning with her family’s own experience of Hurricane Sandy. She ultimately zeroes in on Chicago’s shockingly inadequate response to the deadly July 1995 heatwave, during which the city morgue overflowed with the sudden deaths of 726 citizens, largely the elderly and people of color from the city’s impoverished South and West Side.