After a year with the gang unit, Detective Kevin Ruggiero returns to Miami Homicide, investigating a drive-by shooting that left two men dead. He has little to work with until he learns that one of the victims was a founder of a local gang. Then in Louisville, Detective Kristen Downs responds to the shooting of a 17-year-old boy. When she learns that his friends witnessed the shooting, she has to convince them to overcome their fear of retaliation in order to bring him justice