Tom Miller works at the law firm Biris and Emmerich being involved in a case concerning a pharmaceutical company. Key witness commits suicide when the process is jeopardized, and Miller submit a memo on another case apparently unrelated to his own, is kicked out of one of the partners of the law firm. Tom leaves the office building but notes exchanged briefcase and a strange man entering the elevator had just been announced although employees to go home early due to a technical failure in Internet access. Curious man who chases up with liful and soon discovers that he is a killer. Caught in a struggle for survival, Tom tries to warn him of danger and the few remaining colleagues to work after hours. But will it be to get rid of murderer Tom especially as the life of his friend clerk from the same firm, is in danger?