When a killer drowns a person in maple syrup, Agnew and Chamberlain must infiltrate syrup cartels; Detective White battles with his medical marijuana dealer.
Milt is caught in the middle of Commander Guziewicz's personal life when her adopted son (Rotimi Akinosho) asks him to investigate if the man jailed for his birth parents' murders is actually innocent.
Russ helps Font investigate when he is certain one of the FBI's most wanted fugitives is hiding in Battle Creek, even though Milt insists that the man died months earlier.
Milt survives a car bombing and enlists Russ to track down his would-be assassin, leading to startling revelations about why Milt is the way he is and what brought him to Battle Creek.