《实习医生格蕾第四季》是一部欧美剧，该剧讲述了：荣获金球奖最佳戏剧类电视剧集！ 荣获艾美奖最佳戏剧类影集选角！ 萤幕演员公会最佳戏剧类电视剧集！ 故事延续第三季精采的剧情。西雅图恩典医院因为这些实习医生之间的爱恨情仇，变得更加热闹更有可看性！ 第三季中格蕾终於摆脱了德瑞克和兽医间的三角恋情，依自己的心意选择了所爱的人。伊兹在丹尼死后一厥不振，甚至想要放弃成为外科医生的梦想。克莉丝汀知道了柏克的秘密后，一直企图帮他掩饰。而乔治和性感火辣的住院医师之间的关係变得更迷离。而艾立克斯竟发现自己还是爱著伊兹！另外，马克为了艾蒂森竟也来到了西雅图恩典医院工作。 Meredith和Cristina蜜月归来（买好的机票不好浪费~），Burke已经消失无踪。去年的实习医生Meredith, Cristina, Izzie和Alex，已经获得了正式驻院医生的资格，并且有了自己的跟班，一群初出茅庐，青涩而稚嫩的实习医生。当中，有去年考试不及格的George，还有Meredith素未谋面的妹妹Lexie Grey。今天，他们将要处理一宗三车连环相撞的交通意外，大量的伤者让新来的实习手足无措，目瞪口呆。另一边厢，Derek和Meredith的感情陷入僵局，有可能他们都会和新来的同事有新的感情发展。Bailey对于Callie成为驻院总医生感到气愤，也许她一时三刻还难以接受自己现在要向Callie汇报工作。Richard留任外科主任，仍然是大家的老大~(简介转自YDY) After failing his exam, George reluctantly faces his first day reliving his internship among a sea of fresh faces. Meanwhile, Cristina, Meredith, Izzie and Alex are in charge of their own interns and George is assigned to Meredith. Neither Cristina or Meredith have heard from her exes since the wedding, and they don't seem overly concerned, which astounds Izzie, who is counting every day since she last spoke to George. George asks to talk to Meredith but before he can get her alone, the rest of the new interns show up in the hall and are shooed off by the residents. George gives up and joins the interns. Cristina nicknames him "Bambi," saying he needs to learn how to deal with his new situation.楚翔一脚踏在那具爬行者尸体上，然后将骨刀对向虎视眈眈的爬行者和T4，不管埃维莉娜与自己的关系如何，楚翔决定都要试试，这也算报答一号楚翔历次帮自己忙的回报，况且这次人家借用自己的身体并没有排斥原有的思想，一直是原来的自己在继续控制新的身体，不然的话二号楚翔的意识又要找个角落待着凉快去。
