 The residents initially arrive at the hospital each morning and argue over who will care for a certain patient . A hospital superior is in charge of assigning cases , often translating to tense feelings between the residents and their superiors . Episodes migrate back and forth from the doctors interacting with their patients , and with their co @-@ workers . Once assigned a case , each doctor diagnoses the patient , with the help of his or her attending physician , which usually leads to surgery . The surgeons tend to form personal connections with their patients , with a patient often conveying a message to his or her doctor , which unintentionally relates to the doctor 's private life . The show displays the growth of relationships between the doctors , either friendly or sexual , often stemming to a clash between their personal and professional lives . Emotional scenes are often accompanied by an indie rock background song , something that has become a hallmark of the series . At the conclusion of each episode , one of the characters delivers another voice @-@ over , typically contrasting or following up on their initial one . 
