Rakesh is a young millionaire and all alone in the world, without any problem or worry till he suddenly comes to know that the killer of his father is still alive whereas according to the police record he died long ago.
Rakesh's search for the killer brings him to a hilly region on the border of India, which is in the grip of terror created by a gang of ruthless killers. The leader of the gang has his headquarters behind particular mountain behind Indian boarder where no outsider can reach alive.
Rakesh gets shelter at Thakur Ranjit Singh's house as he saves his elder daughter Durga from ruffians of the gang. Once the Thakur was very influential man in the area but now he is a cripple and living in misery with his wife and two daughters.
Next Rakesh meets Shera and his friends who are all victims of the terrorist gang and they have taken oath to take revenge. The first meeting between Rakesh and Shera starts with a terrific fight but ends in a promise of everlasting friendship.
Durga is always rude and aloof with Rakesh, which puzzles him. One day he follows her and discovers that she is a carrier of opium, hidden in the apples. He forces her to tell the truth and is shocked when she tells him that her only brother Chandan was kidnapped by the leader of the gang and her father was crippled by him when he tried to resist. The safety of her brother depends on her working for the gang. This secret is known only to herself and Thakur Sahab, whereas her mother and sister think that Chandan was drowned in a river. Rakesh promises to bring back her brother safely.
Bahadur the right hand man of the terrorist leader shoots Rakesh... Shera and his boys are caught and taken away by Bahadur's men.
Rakesh survives and the moment he is out of danger he risks his life again and reaches the other side of the mountain. He is shocked to see hundreds of poor people being tortured and forced to work as slaves in poppy fields. Poppysingh the leader of the gang grows illegal opium and has an ambition of dominating the world by making the people opium addicts and himself becoming the richest and most powerful man.
After finding Poppysingh who is the killer of his father Rakesh makes his own revenge motive secondary and he waits for a proper chance when he can destroy both Poppysingh and his huge stock of opium...
But to achieve his aim Rakesh has to fight against many dangerous odds. He is buried alive in the ground and is ordered to be trampled by horses. His best friend Shera becomes his deadliest enemy. He traps his beloved Durga and her brother and hands them over to Poppysingh.
The story of "Kaala Sona" is full of dangerous, daring and deadly moments... Did the death-defying courage of Rakesh help him to succeed in his mission? Was Poppysingh punished for evil deeds? There are many puzzling questions but there is only one answer, "Kaala Sona". Do see it, you will be shocked as well as thrilled.