Simone Clark sets her sights on joining Matthew Garza’s newly formed special unit as they investigate the murder of a federal engineer. Simone and Cutty’s relationship is tested as their opposing opinions about law enforcement come to a head.

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.

While searching for a missing scientist in the Angeles National Forest, Simone and Carter uncover an eco-terrorist’s plans to detonate dirty bombs across the city. Meanwhile, Brendon taps into his own profiling tactics to find the perfect birthday gift for Laura.

When Garza’s character comes into question, Simone and team develop their own covert operation to support their boss

A mysterious caller threatens to reveal a leaked list of undercover FBI agents if a prisoner is not released; Simone enlists John Nolan to help her remodel Cutty’s garage into a living space.

The crossover starts on The Rookie S05E10 The List (I).