A life-changing incident pushes a 45-year-old man to chase his dream of becoming a cop. But he must prove himself to his LAPD superiors to make the cut.

Six months into his career as a cop, John Nolan, the oldest rookie in the LAPD, has used his life experience, determination and sense of humor to keep up with rookies 20 years his junior. But as he embarks on the second half of his rookie year, Nolan will be put to the test by a host of new challenges, romantic relationships and deadly criminals, as he looks to figure out what kind of cop he ultimately wants to be.

As their training comes to an end, Nolan and his fellow rookies on the force must navigate complex professional and personal challenges.

Officer Nolan and the squad at the LAPD face their biggest challenges yet as they solve complex crimes involving their own team.

John and the team welcome two new rookies and continue the hunt for two dangerous inmates with very personal vendettas following their prison escape.