As racial tensions mount during the 1969 celebrity trial of the Chicago Eight, African American PI Smokey Dalton is keeping a low profile with his son, Jimmy, who knows a dark secret about the assassination of Martin Luther King, Jr. When Smokey finds a group of skeletons hidden in the wall of a building hes inspecting for investor Lara Hathaway, his investigation leads him into Chicagos racist past and implicates some of the nations most powerful people in a deadly 1919 riot.