A group of tired commuters have caught the last train home, ready to hop into their beds for the night. However, their train soon veers off-course and crashes into an abandoned tunnel. The three surviving commuters; withdrawn mother Yi Ling, her son Lucas, and student Janice, are forced to band together and survive the night, as well as avoid the mysterious monster hunting them. Yi Ling still suffers from flashbacks to the car accident that killed her husband and nearly took Lucas` life too. When Lucas is snatched away by the monster, her maternal instincts are tested, and Janice`s ideas of family are challenged as she remembers her difficult relationship with her estranged father. Back at the subway control headquarters, the engineers do their best to make sense of the situation and rescue the survivors.她不过是个名不见经传的小人物，哪里能有这样大的脸面，拥有这样好的资源？可有白杰的硬性要求，旁人挡不住他的执意，只能让陈冬青留下来。除了一个小护士，陈冬青没有在这间病房里看到过其他人。就连一日三餐，都是白杰送来的。
《生死环线》上映后网友的热议
主角精湛的演技，将角色的内心斗争展现得淋漓尽致，他的表演受到了观众和评论界的一致好评。这也为他的下一部作品奠定了坚实的基础。
这部剧将古装与悬疑探案巧妙融合，为观众呈现了一个北宋宣和年间的故事背景
演员们的出色表现将为这部剧增添不少色彩。而张颂文和白百何的首次合作，更是成为了剧集的一大卖点。两位演员在剧中的化学反应如何，观众们已经迫不及待想要一探究竟。
《生死环线》这部电视剧的巨大成功，很大程度上归功于两位男主角的出色演技，他们的精湛表演堪称功不可没。
有些道理是共同的，就是演了这么多年戏未红，遇到一个角色红了，并不能说这个演员的功力就真的数一数二的了。只能说更多说明那个剧质量比较高，角色也比较适合这个演员。那些演戏多年一直有名字比较红的演员才应该算是功力比较足，演什么基本都不掉线。
