Barns are burning in Blackwood Township, and the Winnebago County Sheriff's Office realizes they have a firesetter to flush out. Investigation efforts ramp up when a body is found in one of the barns. Meanwhile, deputies are getting disturbing deliveries on their doorsteps. Why are they being targeted? It leaves Sergeant Corinne Aleckson and Detective Elton Dawes to wonder, what is the firesetter's message and the motive behind it?