Lilly is desperate to prove herself but gets stuck on traffic duty; D'Angelo goes head to head with a troublesome inmate; Mangin and Cordova face a new challenge when a dangerous ex-gang member leaves his cell unrestrained.
Israel is pushed to the limit by a combative inmate; Lilly is disrespected while working with inmates for the first time; Cordova fails to uncover hidden drugs in a gang member's cell; Andrew struggles with intense training.
The rookie officers work to assert their authority over the inmates; Ariel supervises a death-row inmate; Lilly faces a pod full of disorderly gang members; Purto returns to work following an assault and another inmate soon confronts her.
Antagonistic inmates cause trouble for Purto and D'Angelo; Lilly takes charge of a prison work program; Andrew wonders if he can handle the demands of the job.
Mangin and Cordova subdue a threatening gang member; Israel bucks prison protocol when an inmate harasses him; Lilly finds drugs in a mail delivery; Purto assists with the discharge of a high-risk inmate.
D'Angelo has a difficult time catching inmates with contraband; Lilly learns a hard lesson about trust when a phone goes missing in the pod; Purto interviews a gang member; a new rookie hopes to live up to his father's legacy.
Mangin and the extraction team must forcibly remove an inmate from his cell; Israel makes a mistake when he performs a drug test; Fabian loses track of inmates in his unit; Ariel starts a new post and attempts to establish her authority.
The rookies work to find evidence to take down the prison gangs; Purto assists in a major drug bust; D'Angelo finally locates drugs in the dormitory; Fabian seeks help from his brother.
Lilly works control in a locked-down prison-gang pod; Chaz prepares for an extraction; Javier excels in the training academy; a major mistake threatens Fabian's job; Ariel fails to show up for work.
An inmate swallows unidentified contraband; gang members brawl in Chaz's unit; Javier works yard duty for his first assignment; a stressed-out Ariel calls it quits, while D'Angelo seeks more action.
The rookies help put the final nail in the SNM gang's coffin; Javier conducts his first extraction; Israel considers a job change in light of recent news; Mangin and Cordova offer their knowledge to a new class of cadets.
New corrections officer Zach encounters a violent inmate during his first day on the job; Ariel works to overcome her timid persona; prisoners taunt Carlos; Tyler locates contraband in the prison kitchen.
Inmates do not appreciate Andrew's aggressive approach; Keith looks for the best way out of a potentially volatile situation; Ariel begins work on the line; one rookie cracks under the pressure of the job.
Francisco reacts when a fight erupts; Tyler crosses the line with a prison gang leader; Keith assists the elite gang unit; Cohen, a third-generation corrections officer, aims to prove his worth.
A career criminal takes advantage of Mangin; Andrew works to bust a gang member who is dealing drugs; Ariel faces the challenges of being a female corrections officer.
Despite efforts to keep the prison clean, narcotics always find their way into the prison; Francisco suspects an inmate is high; Andrew takes inmates on a high-risk work detail outside of the prison; Bruce struggles with high expectations.
The rookies begin to understand the harsh realities of their new careers; Keith reaches a crossroads; Andrew tries to find the balance needed to be an effective officer; an emergency puts Ariel to the test.
An inmate leaves a work detail; Ariel lands a rough assignment; Keith seeks a change; a partnership forms between Andrew and Mangin; a former CO wants his old job back.