The team responds to the report of a severed hand washing up on the beach and are on the hunt to find its owner. Meanwhile, Tim attempts to prove he isn’t a control freak to Lucy and invites her on a double date with him and Ashley.

Officer John Nolan and Officer Celina Juarez are on the hunt for a fugitive after a car incident goes awry. Meanwhile, a past injury comes to haunt Tim and Lucy comes through during his time in need in more ways than one.

Officer John Nolan and Celina witness a shooting, realize the victim was already dead, and investigate further. Back at home, Bailey has been feeling off-center ever since the proposal, leaving Nolan to wonder what he can do to make her feel more comfortable. Elsewhere, Lopez and Harper enlist Lucy’s help to investigate the gang-related murder of a local shopkeeper.

When Dim goes missing, Officer Chen and Sergeant Bradford, along with the CIA, set out to find him and enlist the help of Juicy.

Officer Tim Bradford’s ex-wife returns and asks the team to help her save someone from her undercover past. Isabel’s return also creates additional pressure in Lucy and Tim’s relationship as they assist in the search.

Officer Lucy Chen goes undercover to infiltrate an illegal firearm operation, and Detective Harper and Officer John Nolan work together to solve a mystery involving severed limbs found around the city.

The crossover continues on The Rookie: Feds S01E21 Bloodline (II).

After one of their own is shot, the team suffers a series of close calls and realizes their division may be a target for a group of masked assailants.

The team comes together to celebrate John and Bailey’s wedding; meanwhile, Celina discovers a discrepancy in her case, leading to a new discovery. Elsewhere, Lucy and Tim’s relationship is put to the test.

Following their time as foster parents, Bailey has decided she wants to have a baby and forces John to reconsider their decision to not have children. Meanwhile, John and Celina discover a prison escapee whom they fear is out for revenge and race to find her before it is too late.

On Celina's last day as a rookie, John gives her one final test. Meanwhile, Bailey makes a new friend, and Lucy places her faith in Seth for an undercover assignment.

John, Lucy and Angela investigate the suspicious stabbing of three teenage girls. Back at the station, the team experiences technical difficulties while managing a group of prisoners and a wild animal.

An April Fools' prank on LAPD’s social media leads to citywide chaos. Meanwhile, John's T.O. skills are tested, Wesley is assigned a challenging case, and Tim and Lucy play a joke on the team.