Jalal who has left his wife, is planning to rob a residential complex. There, he finds out about a bombing conspiracy. The next day he informs the police and he is arrested as the only suspect. Major Hashemi, who is in charge of the case finds some clues finds out that Jalal is innocent after some interrogations. When the conspirators realize that the police are after them, they change their plans. Now, the police has to follow two cases at the same time; that is, helping Jalal and finding the bombing conspiracy at The Tehran International Exhibition Center. ...