ER: Season 13

Alex is in acute trouble as Steve didn't even think of his diabetes medication. Kerry finds Abby, bleeding as if from a miscarriage, and Luka, who waves treatment to stand by his new family, which pulls through: it's a boy, called Jospeh, also after Croatian grandfather Josip. Jerry also makes it, despite as selfish dragon mother complaining to everybody, mostly for her own 'trouble' like expenses. Steve's accomplice Rafe Hendricks prevents Sam escaping or leaving a message while buying sugar, speeding so as to get chased by a deputy, racing off till he topples fatally. After arguing how to proceed, Rafe and third accomplice Mary are fatally shot by Steve, who rapes Sam, falls asleep drunk and is shot by her.

As Abby and Luka cope with their newborn's life and death struggle, the couple is shocked to receive a surprise visitor: Abby's mother Maggie. Meanwhile, Sam fears the prospect of criminal charges; Neela discovers that Tony Gates will be joining the ER team as an intern and Morris gets his job back while Weaver gets demoted.

Gates is assigned to the case of a closeted gay man whose partner clashes with his family; Neela meets her new surgical chief, Dr. Crenshaw; and Pratt must cope with the flood of new interns.

A grandfather and grandson are injured in a chainsaw accident, leaving Luka stuck upstairs with a difficult case. Pratt has his trial-by-fire when he has to handle the ER alone, juggling multiple traumas, teaching duties and clever but overconfident ex-paramedic Gates, who does difficult procedures unsupervised and dictates his notes, both infuriating Pratt. Neela mentors contrary med student Jane Figler, assigned to surgery, and helps Pratt after a serious error, to the scorn of the chief surgical resident. Sam discovers Alex's latest extracurricular activity. Gates turns out to be living with Meg Riley and her daughter Sarah. Abby enrolls in a "Mommy and Me" class and hides being a doctor when she meets a group of selfish nannies, which makes her prefer minding he baby herself.

Luka is sued for 'malpractice' by carpenter Curtis Ames, who had a stroke -wrecking his health and family- while awaiting care for pneumonia, due to County's permanent shortages of staff, room and budget. During the trial, each man's recollections of Ames' treatment are recounted via testimony and flashbacks, Luka worries about the implications of the suit and the possible outcomes, yet insists Abby returns to work to adjust as a young mother. An equipment shortage culminating in a burnout sabotaging Pratt, Abby and Neela's treatment of a heart patient leads to attempting a risky procedure. Pratt's early morning trip to the barbershop results in a new awareness of community need while half-brother Chaz asks to move in as he can't study at home or find a decent room.

Luka needs nudging to attend his sentence hearing, but is fully acquitted, yet takes time for desperate plaintiff Ames. Gates is the object of Neelas' erotic dreams and inappropriate 'romantic' moves from a 'special school' pupil without self control. Archie eagerly volunteers to show a TV crew around the ER and sneakily spends all his time grooming, but the aired fame goes to Kerry about under-funding public health care. Luka must decide whether to allow a cancer terminal patient's wife to keep him ignorant to enjoy their last months abroad. Dubenko warns Neela after covering once she must submit to whatever chief surgeon Crenshaw commands. Pratt's romantic night is spoiled as Chaz moves in a day earlier then he expected.

Luka tries to discourage Ames's hopeless quest to get an appeal hearing in his case, unaware Aes bumps into unsuspecting Abby and baby Joe, finding his frog toy. Crenshaw and Lockhart get combative during an M&M session, wile jealous Neela meanly turns on Gates having heard he has a female house-guest, yet ultimately jumps his bones. Rude, aggressive combative patient Willis Peyton, who stormed out refusing vital treatment, returns later under a different name, a completely different person without memory of his earlier visit, Morris has a good idea of what's going on but can't get anyone to believe him until Sam steps in. Behind Weaver's back, Hope gives a destitute father free sample medication for a boy patient. Kerry refuses to become a regular TV medical reporter. Abby and Luka reconsider hiring a nanny.

A mysterious illness leaves little hope when a group of homeless kids enter the ER and one of them believes that Neela is a guardian angel in blue; Abby and Kovac clash over a possible case of domestic abuse; Pratt makes a shocking discovery about his brother, and Weaver is unexpectedly called into action when her television appearance becomes a real emergency.

Thanksgiving at County is quiet, with the normal number of routine (or nearly so) emergencies. But Abby makes up for the lack of excitement while returning to the hospital as the doctor on a helicopter transport.

As police officer Hollis considers Ames not dangerous but Luka spots him lurking around, he rushes out to to confront the problem by threats at his construction site new job. A teenage girl found in front of her school, bleeding, seems raped. As Luka, Gates, Abby and Neela treat her and try to figure out what happened, Luka must help the girl's mother, a colleague, whose own trauma proves the key. Abby's friend from Ike's returns as destitute patient. Pratt celebrates when his moved-in brother brought a girl, but Caz fully comes out to have as 'pure gay'. Dixie new nurse Ben Parker proves as foxy as handy with trouble patients in the ER. Gates pours on the charm, Neela is not impressed as meg clearly still digs him, but Ray warns her she can't have it both ways.

It's Christmas in the ER. A homeless boy sends Gates and Ray on a mission. Meanwhile, in the ER, Neela oversees an unusual kidney transplant case; Sam takes a stand when a patient is dumped in an alley by another hospital; and Morris plays Santa for a special girl and learns the meaning of Christmas.

Weaver cares for a Katrina survivor who's reluctant to have surgery on her foot; budget cuts force Luka to make a difficult personnel decision. Also, Gates' home life intrudes on the ER; and Pratt and Hope are shaken after a patient in their care dies needlessly.

Kovac reacts negatively when he sees Abby giving extra attention to a patient; Ray and Gates clash over a patient, pinning Neela in the middle; and Ben takes things to the next level with Sam. Meanwhile, Pratt is under investigation and Weaver says a final goodbye to the ER.

Kovac finds himself in a tense confrontation with Curtis Ames, and Abby must act to protect her family. Meanwhile, Neela and Gates rush to get Meg to the hospital while Sam's new home is soon under threat from fire.

Abby and Sam try to treat an aspiring comedian with mysterious symptoms; Pratt must defend his actions in front of the medical board; Neela scrubs in on a kidney donor transplant; and Morris, as the lone attending, must run a busy ER. Also, Kovac gets a surprising proposal from Abby.

Kovac and Gates find themselves with a moral dilemma when a woman comes into the ER with acute liver failure; Neela finds herself questioning what is right when Manish decides to give up a kidney to a complete stranger. Meanwhile, Ray fights to get to the bottom of a cheerleader's accidental fall; Abby gets a prediction for her future; and Alex's troubles continue to intrude on Sam's work life.

A blizzard strands a family in the snow and Abby and Pratt quickly try to save the family. A gang shooting challenges Morris and Pratt. Meanwhile, Kovac and Abby begin making wedding plans, but their engagement might not be very secret; Gates struggles with the reappearance of his father and the possibility of losing Sarah; and Neela becomes jealous when Dubenko brings in a new surgical intern.

It's Sam's birthday, but she finds it hard to be away from her son Alex. Meanwhile, Sam meets a photographer taking pictures of a terminal patient and she gives Sam a new perspective on life. Dubenko's new surgical intern unsettles Neela during a trauma; Gates is shadowed by a new and nerdy intern and later must tell Sarah the truth that he may be her biological father. Also, Morris and Hope annoy Kovac and Abby when they try to help with their wedding preparations.

Kovac and Gates deal with a hopeless father whose son succumbs to heart failure; Pratt tries to resolve the tension between him and his brother; an Armenian man tries to be a good samaritan but ends up crashing near the ER; Abby sneaks in baby Joe when she worries his sickness may be worse than it seems; Also, Sam injures the instructor of a self-defense seminar.

In 12 hours, the ER will shut down. As Kovac is under pressure to take care of the patients before the final hours, he makes a pivotal decision about his future. Meanwhile, Sam befriends a photojournalist who returns only this time she's terminally ill; Pratt is concerned when his brother ends up in the ER drunk; Morris confronts Gates when he ignores his orders and angrily sends him home while Gates tries to defend his actions.

What is supposed to be a departmental dinner organized by Kovac turns out to be the surprise of a lifetime for Abby when she learns it's a surprise wedding, secretly planned by the eager groom. Meanwhile, at the wedding, ER staffers enjoy themselves with music and booze while Neela finds herself the center of unexpected attention between Gates and Ray, which leads to a drunken fight and a shocking conclusion.

The ER reopens with new changes. However, the ER is not the only thing that's changed; Kovac and Abby adjust to being newlyweds; Morris and Hope enjoy themselves at the honeymoon suite; Pratt attempts a change for a woman; Neela worries when Ray goes missing; Meanwhile, there's a new doctor in the ER and he means business; and another change may come when Kovac receives a phone call.

The ER is now in the hands of a new chief, Dr. Kevin Moretti, who is bent on major changes. Meanwhile, a phone call leads Neela to a hospital where a major shock awaits her, and a final farewell from a friend and colleague. Gates urgently goes home to stop Sarah from being taken away from him. A drug-addicted Iraq War veteran baffles Morris and Sam. Also, Kovac postpones the honeymoon and says goodbye to Abby and his son, for the meantime, while he travels to Croatia to visit his ailing father.