Plot

Multi-millionaire Thakur Maharaj Singh owns a stud-farm with several derby-winning stallions. Unfortunately for him his farm is soon attacked by Bandit, Maan Singh and his gang forcing Maharaj to retaliate killing the son of the Daku. In order to avenge this Maan Singh decides to abduct the son of Maharaj, Chimpoo. Years later a young man enters the lives of the Singhs claiming to be Chimpoo; while Maharaj and his wife, Rukmini is happy in having Chimpoo back; they are unaware that this young man is actually a convict, Badal who is impersonating Chimpoo with the intention of pocketing their wealth. Situations change Badal and he decides to reveal his true identity to the Singhs who also promises to re-unite the family with their son, Chimpoo.—gavin (racktoo@hotmail.com)

Maharaj Singh is a proud owner of several derby-winning stallions, and lives in a palatial farmhouse with his wife, Rukmini and young son, Chimpoo. One day dacoits attack his farmhouse with a view of stealing the stallions, but Maharaj fights them, killing the son of the leader of the dacoits, Maan Singh. Maan Singh swears to avenge the death of his son, and abducts Chimpoo. Years later, a servant of Maharaj, Ram Singh, brings a young man named Badal into the Singhs lives, and tells them that he is their missing son Chimpoo. Both Maharaj, Rukmini, and their daughter, Sunita, are delighted at having Chimpoo back in their lives. Then Badal and Sunita fall in love with each other. It is then Badal confesses to Maharaj that he is not Chimpoo, but a former convicted jailbird, who was asked to impersonate him by an embittered Ram Singh. Maharaj does not want to relay this information to an ailing Rukmini, and decides to keep it quiet for the rest of their lives. But sooner or later Rukmini is bound to find out - especially when Badal and Sunita openly show their love - will this shock of an intimate brother and a sister spare her or has fate something else in store for her.—rAjOo (gunwanti@hotmail.com)

Maharaj Singh (Shammi Kapoor) is a proud owner of several derby-winning stallions, and lives in a palatial farmhouse with his wife, Rukmini (Indrani Mukherjee) and young son, Chimpu. Chimpu has a birth mark (in the shape of a trident) on his back. Maharaj Singh is a champion horse rider and prides himself on taming the wildest of beasts.

One day robbers attack his farmhouse with a view of stealing the stallions, but Maharaj fights them, killing the son of the leader of the robbers, Maan Singh (Madan Puri). Maan Singh swears to avenge the death of his son and abducts Chimpu. Chimpu was 2 years old and the night he was abducted, was his birthday. Servant Ram Singh (Ramesh Deo) gets blamed & kicked out of the household by Maharaj Singh. Ram Singh used to look after Chimpu inside the house and was with him all the time. Even at the time of Chimpu's abduction, Ram Singh was sleeping in Chimpu's room and hence was the prime suspect. Maharaj Singh spends all available resources to find Chimpu, but without any success.

20 years later Ram Singh is at a circus & finds a recently released convict, Badal (Amitabh Bachchan) whose mannerisms match Maharaj Singh. Badal has the same accurate aim with a gun that Ram Singh had last seen in Chimpu. Ram Singh was running a shooting game arcade and was paying 20:1 odd if the shooter could hit 6 balloons with 12 shots from a pellet gun. Badal corrects the shooting sight of the gun and hits 12 targets in a row. Badal also says the same things that Maharaj used to say. Badal can ride horses like an expert.

Badal has taken to a life of crime to support the poor villagers who are dependent on his meager income. Badal used to work at a racecourse but was fired for someone else's mistake and was jailed for the same. Badal was released as part of a leniency declared on India's Independence Day and that day, he had decided that honesty does not pay.

Badal has no birth mark, but Ram Singh tells Badal about Maharaj and Chimpu. Ram Singh convinces Badal to get a tattoo (for which they pay Rs 5 to a tattoo artist) & to pose as Chimpu to inherit the wealth. In exchange Ram Singh will get a 50-50 share of the Maharaj's wealth.

Ram Singh teaches Badal everything about Chimpu's childhood memories and toys. Ram Singh tells him about Chimpu's mother Rukmini, a toy horse, a cradle made of sandalwood, stud farms, horses and the fact that the parents have been waiting for Chimpu for 20 years.

Badal reaches the Maharaj's village by train and travels on foot to his estate. On the way he runs into college students camping in the jungle protesting the cutting of forest to create roads in the hills. Sunita is part of the group, and Badal is instantly smitten with her. The students invite Badal for a meal, impressed with his singing skills.

Badal saves Maharaj's daughter's Sunita (Saira Bano) life from a stray horse that had escaped the Maharaj's stables & slowly they fall in love. At this point he doesn't know Sunita is Maharaj's daughter. Badal returns the horse to the Maharaj's stables and gets a job as a farm hand on his estate. Sher Singh (Jagdish Raj) is the manager of the Maharaj's stables and is impressed with Badal's skills with horses.

Badal learns that Rukmini has not emerged from the shock of losing her child. She is still bedridden and sick. Maharaj Singh doesn't visit his stud farms anymore as he devotes all his time to the care of Rukmini. Badal goes in front of Maharaj & shows off his shooting & horse skills & impresses him. He then infuriates Maharaj in a series of incidents. At first, he disrespects a gift given by the Maharaj by shooting it with Maharaj's own gun, and then proceeds to insult the Maharaj's horses, which prompts him to tear Badal's clothes off & he sees the birth mark. This prompts Maharaj & Rukmini to accept Badal as their long-lost son, Chimpu.

But at this point Badal also learns that Sunita is Maharaj's daughter & technically his sister. Sunita is confused because at some level she refuses to believe that Badal is her brother. As the news spreads Maan Singh wonders how Maharaj got a new son. Maharaj starts involving Badal in his business and starts handing over the reins of the offices to him.

Now Ram Singh starts blackmailing Badal for his share. But Badal is moved by the trust & respect Maharaj Singh gives him & refuses to taint that by giving in to Ram Singh's demands. When Ram Singh tells the truth to Maharaj, at that moment Badal also professes the truth to Sunita.

Maharaj confronts Badal & Badal accepts his folly. But Maharaj can't kick him out as this news would kill his wife who has grown fond of having her son back after 20 long years of separation. Maharaj also notices that Badal had every opportunity to steal money from Maharaj, as he was handling transactions worth several Lakhs, but every cent was accounted for, and all the money was safely deposited in Maharaj's accounts.

Maan Singh approaches Badal & says that he has the real son Chimpu & asks Badal for Rs 2 Lakhs to keep his silence. Maan Singh says that he wanted to kill Chimpu after abducting him but was swayed by the child's innocence. Chimpu was raised by Maan Singh as his own son Suraj (Vinod Khanna) (& who is now a robber). Badal gives the Rs 2 Lakhs to Maan Singh, but kidnaps Chimpu when everybody in Maan Singh's camp is asleep.

This lures Maan Singh to the estate & brings Maan Singh, Suraj, Badal in front of Maharaj. Maan is defeated in gun fight & he is forced to admit that Suraj is none other than Chimpu. When Maharaj's wife finds out, she forgives Badal & accepts him as son-in-law. Suraj agrees to leave Maan Singh & come back to his real family.