The plot of Be Reham revolves around Sanjeev Kumar, the police commissioner and Shatrughan Sinha, his subordinate inspector who is his devotee and always keep him in high esteem. The dead-honest and dutiful cop Sanjeev opines that policemen are no ordinary civilians and to do their duty perfectly they should be careful with their public image. He gives this lesson to Shatrughan when he finds him enjoying wine, dine and dance with his lady love Reena Roy and others. However Sanjeev himself has to face the dilemma of following the law of the land or maintaining his image (which he feels, represents the image of the whole police department) when accidentally a bad character is killed by him at the house of his ex-flame, Mala Sinha who had been led by circumstances to become a prostitute. Mala stops him to call the police and asks him to leave in order to stay away from any type of scandal that may tarnish his image. However after getting herself arrested post his departure, Mala feels that she may not be able to endure the police interrogation and there remains the possibility of herself revealing the name of Sanjeev. To avoid any such likelihood, she commits suicide in the police lock-up. Investigating officer, Shatrughan finds certain clues hinting that a big gun of his own department may be involved in this murder case. However he respects Sanjeev so much that he suspects everybody except him. Another parallel track in the movie is of Sanjeev’s college buddy, Kader Khan who is now a big smuggler and involved in other illegal activities also. He tries to bribe Sanjeev but his this act itself brings him into the suspicion of Sanjeev. After getting information about his real activities, Sanjeev goes after him. In the action-packed climax related to the kidnapping of a big Indian scientist by Kader Khan, Sanjeev gets killed but not before sending his letter for confession of the murder at Mala’s residence to Shatrughan.