该剧设定在一辆格拉斯哥到伦敦的卧铺火车上,火车上发生危机并迅速升级,两位陌生人必须合作拯救车上的乘客。。Chan-woo, who has been studying to become a police officer for 5 years, joins his friends for dinner to ask for the money to apply for his exam and ends up getting drunk. He completely blacks out and wakes up not remembering what happened in his next door neighbor's room. Not only that, he finds a bloody corpse in the middle of the room. He hurries back to his room and tries to...。