In a web of power and deceit, Lakshmi, Manorama, is a dominating force who wields her husband Sivaswamy's money with cold contempt, shaping every move in their household. Her iron grip sparks a chilling chess game when Ramu, R. Muthuraman, Sivaswamy's son from his first wife, pleads for ₹3,000 to help his sister's husband, only to be met with a blunt refusal that tightens the family’s orbit around money and pride.
Ramu teams up with his cousin Mali, Srikanth, and their tea-shop friend Appaswamy, Thengai Srinivasan, plotting a daring theft. Disguised as a godman named Badrinath Swamy Sukranada, Appaswamy is tasked with infiltrating Lakshmi's fortress of cash to seize ₹50,000, turning faith into a possible windfall and setting the stage for a clash of wits.
Meanwhile, Rama, an orphan who has only one steadfast ally in Dr. Iruthayam, is pulled into a precarious orbit around Lakshmi's world. Dr. Iruthayam is played by Typist Gopu, and his blunder when Rama asks for a conduct certificate to become Lakshmi's secretary leads to a mix-up: the certificate is for another girl named Rama, who is mentally unstable, weaving a second layer of danger into the scheme.
DSP Paramantham, who previously arrested Appaswamy, re-enters the drama and encounters the supposed godman. Appaswamy uses charm and cunning to delay any action, spreading a false sense of safety as the clock ticks toward the godman's imminent arrival. Rama sees Appaswamy without his beard and, curiously, does not suspect a thing, further muddying loyalties and motives.
A telegram announces that the real Badrinath Swamy Sukranada will arrive in two days, heightening the pressure on the would-be thieves. Mani, Lakshmi's brother, longs to buy jewelry for his girlfriend Latha, but a confrontation with Latha's brother exposes him. In a desperate moment, Mani steals ₹5,001 that Lakshmi had donated to Appaswamy, and Rama catches him in the act, turning the bugged scheme toward unraveling.
Soon, the sane Rama joins Lakshmi's household as secretary, and the delicate balance among the players shifts again. As Ramu and Appaswamy quietly agree not to reveal that the sane Rama is actually insane, the father of the unstable Rama becomes entangled in the web of secrets and accusations, avoiding exposure only through careful cooperation.
Lakshmi, trusting the godman, guides Appaswamy to her hidden stash and teaches him how to access it, a moment that crystallizes the tension between trust and treachery. That night, the plan goes into motion: Appaswamy and Ramu carry out the heist and stash the money in a flower pot, counting on brains and bravado to outpace suspicion.
Yet the plan begins to crack when the insane Rama's father, the sane Rama, and Mani stumble upon the stash. Mani discards the cash to Latha's brother, but Rama catches him once again, and the money ends up concealed inside the brother's coat. To prove the other Rama's instability, the sane Rama suggests the coat would suit her, prompting a flash of truth as the unstable Rama creates a scene that exposes the ruse.
With the web of confusion beginning to clear, Lakshmi relaxes and consents to a future that unites Ramu and the sane Rama in marriage, closing one circle of deceit while leaving the door open to new beguiling twists in this tale of money, identity, and the shadows cast by ambition.
