It's the first day of Carter's internship. He has a 36 hour shift and overnight he has to cover the ER, the ICU as well as the surgical patients

While the whole staff is worried the ER might close, Jeanie has her own problems in dealing with being HIV-positive

Donald Anspaugh has a new method to increase the staff's efficiency, new intern Maggie Doyle joins the ER and Susan asks Mark to come along to Hawaii

Doug's one-night-stand has a seizure and he brings her to the ER

While Mark is anxious about Susan's return from her holiday, Doug and Carol ride along with the health mobile

While on their helicopter flight rotation, Mark and Susan find an injured family of four who they bring to the ER

Encouraged by Carol, Mark finally asks Susan out. Benton tries to save a boy, despite the fact Doug thinks he's brain dead

It's Susan's last day. Carol stands up for her nurses when one of them is being rotated to another department

Carol worries about her physics exam while Mark is heart-broken about Susan's departure and focuses solely on his job

Mark and Kerry have to create a policy regarding HIV-positive employees, which leads to gossip amongst the nurses

Carol has to fire two of the nurses. Meanwhile, Gant feels Benton is too hard on him

Carter feels guilty about Gant's death. Benton doesn't want to talk about it

Benton can't keep his mind on the job, Mark and Chuny break up and Carol does what she needs to do regarding the fatal error she has made

Doug treats a dying 17-year old cystic fibrosis patient who doesn't want to be resuscitated. Carter gets to operate Benton

Nurse Carol Hathaway is held hostage during a convenience store robbery, then befriends one of the gunmen

Carol will hear whether her suspension is permanent or not. Mark and Doyle do what they can to get a patient with Down syndrome on a heart transplant list

Benton goes into Carla's private hospital files when he fears that something may be wrong with their baby; Jeanie treats a suicidal woman who reveals a surprising secret; and Greene learns that Rachel has been lying about her health

Benton tries to find out if everything's OK with Carla's baby. Carter tries to get a man operated, despite the fact Anspaugh thinks he will die no matter what

Benton takes a day off to help Carla. Carter finds out Edson falsified a chart

Jeanie asks Greg to help Al get into a special AIDS-program at the hospital. Olbes brings in her grandfather, who had a stroke

It's Carol's birthday, Mark is returning to work after being assaulted and Carla goes into premature labor

Anspaugh is furious when Carter tells him he wants to quit surgery. Charlie is brought in with an overdose. Mark keeps struggling with his beating