The BAU team investigates a series of brutal home invasions and murders in California's Inland Empire that appear to be gang-related, but their investigation may uncover a more sinister motivation.
J.J. struggles with not being treated like an adult on his 18th birthday; he learns a valuable lesson from Kenneth; an exchange student moves in with Taylor; Dylan is recruited to be on the school's wrestling team.
An assassination attempt is made on the life of Battle Creek's mayor, requiring Russ and Milt to protect the unorthodox politician while seeking the person responsible.