In 1998, Valens' worked undercover on a high-profile drug case that is reopened and now he must face the demons that have been haunting him for the past eight years. Valens' got too close to a lady friend that was being used as a drug mule and it might have cost her life. The entire squad is shocked to know that Valens went undercover and had never mentioned it to anyone, which casts an even darker cloud upon him.