生死环线

简介：Agroupoftiredmutershavecaughtthelasttrainhome,readytohopintotheirbedsforthenight.However,theirtrainsoonveersoff-urseandcrashesintoanabandonedtunnel.Thethreesurvivingmuters;withdrawnmotherYiLing,hersonLucas,andstudentJanice,areforcedtobandtogetherandsurvivethenight,aswellasavoidthemysteriousmonsterhuntingthem.YiLingstillsuffersfromflashbackstothecaraidentthatkilledherhusbandandnearlytookLucas`lifetoo.WhenLucasissnatchedawaybythemonster,hermaternalinstinctsaretested,andJanice`sideasoffamilyarechallengedassheremembersherdiffltrelationshipwithherestrangedfather.Backatthesubwayntrolheadquers,theengineersdotheirbesttomakesenseofthesituationandrescuethesurvivors.