这是发生在美国芝加哥一家急诊室的故事,这里每天收治的都是需要急救的病人,每位医护人员都用自己的高超的医术和仁慈的爱心对每一位患者进行救助,每天有很多人从这里健康地走出,也有很多生命在这里画上句号,但是弥漫在急诊室里的温暖感受人的空气,却一直没有变过……健康与病痛相连,生命与死亡并存,这部剧集讲述发生在急诊室里真实而又感人的故事。Sam and Luka are desperately trying to find Alex, who has run away from home in the previous episode. Meanwhile, Ray, Abby and Neela have their first day as R2's, which means that besides treating patients, they have to monitor and teach interns.