Every action has a reaction whether good or bad. Sherkhan was a bad man - a purverted soul - One day while running away from police, he tried to fool a dancer Zarinabai to hide him but Zarinabai though earning her livelihood by dancing profession helped Inspector Verma and got sherkhan arrested.
Time rolled by Zarinabai gave birth to a son and so, is the case of Mrs. Verma. She also gave birth to a son.
Sherkhan was released by them. But by this time, Inspector Verma had given away her son to Zarinabai since Sherkhan had kinnapped Zarinabai's son before she dies. Inspector Verma this time again managed to arrest Sherkhan and recover his son from him though of course it was not his son but Zarinabai's son and his own son was being brought up at Zarinabai.
With the lapse of time Zarinabai's son turned out to be Sikander and son being taken care of at Inspector Verma's place as Amar who became Inspector of Police. Zarinabai's son took up an oath to avenge the death of the mother from the Police inspector who killed his mother and for this purpose he took up the profession of smuggling to attack Police around him.
As ill luck could have it Sherkhan's henchman Michel employed Sikander in his group, not knowing that Sikander is after the life of a police Inspector, which he wants to do through Michel's gang.
Sikander in due course of time got an entry in Commissioner Verma's house and started smuggling activities just under the very nose of commissioner Verma ( Inspector Verma had become Commissioner of Police by now ).
The story take an unprecedented move now - Sikander is made to believe by Sherkhan that Commissioner Verma is the killer of his mother and he must kill him - But did Sikander kill commissioner Verma ? or he came to know the foul game played by Sherkhan and avenge the death of his mother by killing Sherkhan is to be seen on Silver Screen.
(From the official Press booklet)