[6][7][8] Bablu Sanyal, a Kolkata based boy is kidnapped by a gang while returning from school.

The driver and one more kidnapper died on the spot, while the other two crooks, Shyamlal and Raghu, ran away leaving the unconscious Bablu presuming he is dead.

Meanwhile, Bablu's father Saradindu Sanyal advertises in the papers offering a huge reward for information about his son.

The film runs with the story of the emotional bond of love and affection between Bablu and Harun.

Finally Bablu alias Fatik regains his memory, returns to his home with the help of Harun.