Simone utilizes her informant to track down an arms dealer on the FBI’s Most Wanted list. Brendon investigates a risky lead on a congressman. Cutty and Simone struggle to see eye-to-eye. Tim and Laura find common ground with their similar no-nonsense approach to training rookies.

When the team splits up to question a suspect’s father, Simone and Laura discover critical information on how their abusive relationship is connected to the crimes. Following this lead, the team heads to Tucson to save the suspect’s newest target. Meanwhile, sparks fly with Laura and her former colleague, Mark Atlas, as they debate the killer’s motive

The crossover starts on The Rookie S05E04 The Choice (I).

When Simone and Carter go undercover to find an international assassin known as The Reaper, a prisoner seeking bail recognizes Carter and nearly blows his cover. Laura and Brendon trace a lead on The Reaper’s assault rifle while Brendon works to heal his relationship with his father. Meanwhile, Simone’s demanding work schedule puts a strain on her relationship with Dina.

After a father and daughter are kidnapped on Thanksgiving, the team discovers a hostage situation involving police deputies. When the gunmen offer an exchange for the hostages, Simone is sent undercover by Garza, and Lopez arrives to help rescue Wesley. Meanwhile, Laura and Brendon search for a nanny cam that could reveal the identity of the kidnapper.