Bhoominathan is a NASA scientist who discovers that plant life can exist on Mars by adjusting certain anaerobic conditions needed for survival. He is highly praised by his peers for his discovery. While on a one-month vacation in Tamil Nadu, he discovers that his village is affected by drought and the underwater reservoir of his land has been drained away for futile purposes by certain corporations. He's also dismayed to find out that his uncle, who is an agriculturalists, is burdened with farm debts due to the scarcity of water supply in his village. His uncle had tried to sort out this issue rigorously with the local MLA, the district collector and the governing body but in vain, and eventually, he succumbs to the pressure by burning himself.Unable to withstand the grief over the death of his uncle, Bhoominathan vows to avenge Richard Child, the chief of the leading corporate (who is the main villain in this story), by summoning him to the court of law. Still, his attempts go unrecognised before the villain's money and might. However, Bhoominathan decides to fight it out in an intelligent way by gaining the trust of his village people and by starting his own trusted corporate 'Thamizhan' by the village people and the corporate company's former employees, despite facing many obstacles. Finally, he succeeds in his attempts and reclaims and replenishes his land using the knowledge of his hybrid plant technology that he had learnt in the past and saves his land and his people from drought.