Despite the case being closed, Bobby is determined to prove his AA sponsor was murdered and bring his killer to justice. Meanwhile Buck struggles with his post-traumatic stress.

The 118 race to the rescue at emergencies at a commercial bakery and a bodybuilding competition; Bobby's annual performance reviews sends Chimney to the firefighter academy where he runs into a familiar face; Eddie's aunt gets involved in his personal life; Maddie helps a nervous teen suffering a panic attack.