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

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

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.

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.

Carter is exited about getting his own med student and Mark and Carol interview candidates for the desk clerk position.

Una herida causada en el trabajo, hace que el ex esposo de Jeanie, admita la situación ante uno de los trabajadores. Cuando Morgenstern está incapacitado para trabajar debido a su ataque cardiaco, Anspaugh asigna oficialmente a Weaver como reemplazo temporal. Ella abusa por completo de su autoridad. Carter acusa a Doyle, lesbiana, de favorecer a Del Amico y darle mejor asignaciones. Carter y Del Amico tienen su primera cita en una lavandería.

His ex-wife Jennifer tells Mark he can't see Rachel until he's got his act together. Reece gets to go home. Al has lost his job.

Una ventisca atrasa el nuevo suministro de sangre en el aeropuerto, y Carter debe decidir si dar las unidades restantes a un violador o guardarlos para un paciente más respetable. Mientras tanto, Corday hace avances hacia Benton.

Una explosión en la bodega de químicos envía a varios trabajadores de la sala de emergencias a la sala de emergencias, poniendo a todos en peligro cuando descubren benzeno en el piso. La sala de emergencias es evacuada por Carter, cuando Weaver es afectado por el tóxico. El equipo de materiales peligrosos se reporta en el hospital. Hathaway y Ross quedan atrapados dentro de un elevador con una pequeña con problema renal que necesita dialisis. Trabajan fervientemente por mantenerla con vida.

Ross se prepara para presentar un trabajo sobre pediatría, y él trata a un niño de 6 años de edad, quien pudo haber sido envenenado por un miembro de la familia. Mientras tanto, Carter se sorprende al descubrir un rostro familiar cuando unos consumidores de heroína con sobredosis llegan.

Carter finalmente tiene el valor suficiente para preguntar a Del Amico para salir; Jeanie trata de ayudar a Scotty para decidir si se somete a un tratamiento experimental; y Benton toma medidas inesperadas durante una operación con Morgenstern.

En la sala de emergencias atienden a las víctimas de explosiones en una clínica de atención familiar, cuidado prenatal y de abortos. Carter se hace cargo de un paciente de edad avanzada que siente ser víctima del olvido. El hospital suspende a Benton cuando admite sacó a Morgenstern de una cirugía que llevó a la muert del Dr. Swanson. Morgenstern muestra la cinta de una laparoscopía a Weaver, una grabación que había estado ocultando, y renuncia.

Un guardia de seguridad sufre de quemaduras químicas graves, y un hombre de 21 años de edad es tratado después de caer 75 pies en un río. Mientras tanto, Benton está molesto porque el novio de Carla es parte del bautismo de Reese.

Ross ayuda en la recuperación de un consumidor de metadona; un evangelista y su esposa, que está sufriendo de una infección, planean una emisión en la sala de emergencias; el antiguo novio de Del Amico llega; y Jeanie teme que su salud está empeorando rápidamente.

Corday se impresiona al descubrir que Romano se rehusa a ayudarla por un año más. Greene y Weaver son forzados a tomar acción disciplinaria en contra de Ross por su tratamiento no ético de Josh McLean sin embargo, el rápido tratamiento de desintoxicación acaba teniendo éxito. La cuidadora de Reese piensa que Reese podría tener un problema de audición. Weaver renuncia como jefe de medicina de urgencias.

El miembro herido de una pandilla intenta abandonar la sala de emergencias para obtener venganza. Benton mantiene la discapacidad auditiva de Reese en secreto. Jeanie le dice a Ross que quiere ser su asistente en la sala de emergencias pediátrica. Weaver hace una entrevista para aplicar como jefe permanente de medicina de emergencia. Hathaway le confiesa a Ross que podría estar embarazada, pero después descubre que no es así. Lucy lleva un cadáver a un lugar equivocado al llevarlo a la morgue.

Dr. Corday commits a deadly error after being on-call for nearly 36 hours straight. Peter visits Dr. Kotlowitz and receives encouragement regarding a cochlear implant for Reese. Dr. Amanda Lee, a prospective new ER chief, visits. In the wake of a failed pregnancy attempt, Carol lashes out at a mother using abortion as a means of selective birth control. Carter and Lucy feud when Carter accidentally uses her palm computer and finds out what she thinks of him. Mark panics during a paramedic initation.

Ricky Abbott returns to the ER. Doug forges papers to allow Joi to treat Ricky at home. Corday decides to back out of the Romano sexual harassment investigation after he threatens to expose her relationship with Benton. Romano is later named Acting Chief of the ER. Dr. Greene treats a Nigerian janitor for back pain and impotency. Carol and the nurses watch a bunch of dogs when their owner is hospitalized. Carter diagnoses a med student with Hodgkin's disease. Kerry initiates a search for her biological parents.

Doug faces possible criminal charges after Ricky Abbott dies when Ross bypasses system lockouts to enable Joi to give Ricky a lethal dosage of dilaudin. Doug is delegated to desk duty, Carol's clinic is shut down for acquiring the P.C.A. machine for Ricky, and Greene and Weaver face future disciplinary action for not reporting Doug's tampering with the double blind study. Carter and Lucy discover a mutual attraction. Benton studies with a sign language instructor.

Greene assists paramedics in treating injured children at a school bus accident. En route, Doug and Jeanie survive their own accident. Kerry stops Doug from treating Jeanie...or any other patient. Doug decides to resign and leave Chicago for the Northwest and asks Carol to come with him. She decides against it, but he leaves anyway. Carol steps down from running the clinic so that Anspaugh will keep it open. Jeanie discovers she may have contracted hepatitis. Hospital janitor Mobalage's wife is stabbed.

During a paramedic ride-along, Carter is forced to drive the ambulance while fleeing a riot scene and inadvertently runs over a teenage boy. Later, a paramedic is shot by an angry mob looking for the driver of the ambulance. Carol is despondent following Doug's departure. She later discloses that she's pregnant. Kerry is intrigued by an injured pro wrestler and his relationship with his father. Lucy tangles with an Asian family that requests their matriarch not be told of a cancerous tumor. Jeanie turns down dates with both Dr. Baker and Reggie, telling each she's seeing someone else.

Greene tries to help Mobalage when he's about to be deported. Kerry tries to save a woman she believes is her birth mother. Hathaway decides to have Doug's child. Benton and Corday clash over an ER fellowship. Carter is in charge for the day, part of a requirement for applying for chief resident.

The ER docs tend to three teenagers who were in an accident on the way to their senior prom. Greene and Carter treat the most severely injured, a boy suffering from third degree burns over 80% of his body. Benton receives the ER trauma fellowship. Carol finally tells Doug about her pregnancy; Kerry also figures it out. Mark and Elizabeth draw closer. Lucy tells Carter about her Ritalin addiction. "FBI agents" bring in a shot stripper.

When Anspaugh decides to retire as chief of staff and return to surgery, he appoints Romano as his replacement. Greene expresses reservations about the decision, but Weaver does not support Greene. Romano makes Weaver the new chief of emergency medicine.

After his mother's funeral, Dr. Greene comforts his father in San Diego. In Chicago, Romano surprises Corday by appointing her associate chief of surgery. Corday treats Elaine, Carter's lover, for breast cancer.

A recommendation from Weaver allows Jeanie to have temporary approval as a foster parent for baby Carlos. Reggie and Jeanie get married. Lucy and Kovac talk with a young woman whose husband they believe is very dangerous.

Hathaway befriends an out-of-work waitress, Meg. Seven-months pregnant, Meg cannot afford prenatal care. Hathaway invites her to the hospital, performs free tests and helps her interview for a job in the cafeteria.

Benton struggles with the idea of taking a DNA test to determine whether or not Reese is actually his son. As the signs continue to pile up, Kerry and Mark use a fake patient to convince Dr. Lawrence of his Alzheimer's. Carter has trouble persuading a woman from a nursing home fire to sign a DNR for her husband and later is asked to forge charts for a family with no insurance. Carol continues to meddle in Meg's life, having her arrested so that she can be detoxed. Cleo is blamed for an explosion in the suture room but it may actually be Dr. Dave's fault.

Dr. Greene and Corday bond with their parents, Lucy cares for a patient with a psychotic break, and Valentine's Day celebrations in the ER end tragically for one of the students.

Kovac witnesses an accident and saves the young victim's life. Carter slowly recovers from his brutal attack and undergoes excruciating physical therapy. Hathaway helps two sexually active 14-year-old girls.

Even though he suffers from intense pain due to his stabbing injuries, Carter returns to work and prescribes a controversial procedure for a suicidal patient. Greene tries to convince his father to undergo cancer treatment.

After Corday refuses to perform exploratory surgery on Cleo's patient, Cleo enlists Benton's help, infuriating Corday. Abby cares for a pregnant woman with five children who wants an abortion. Greene lovingly tends to his dying father at home.

Chaos reigns in the ER when two prisoners are brought in for treatment, but instead plot a violent escape. Their desperate actions place one doctor in harm's way, and forces one nurse to become a tool in their plan.