Dhosth

Vijay meets Geethu at the Coimbatore railway station while traveling to Chennai to enroll in an engineering college. It is love at first sight for Vijay. This chance encounter sets the course for their future romance.

Vijay enrolls in a Chennai engineering college where Ajith studies, and their first interactions are tense. They get off on the wrong foot as newcomers. Their initial clash foreshadows the complicated path their friendship will take.

Vijay declares his love to Geethu, unaware that she is Ajith's sister. Geethu does not appear interested and keeps her distance from him. The confession sets up an awkward dynamic between Vijay and the family.

Vijay saves Ajith's life from a group of thugs, earning Ajith's gratitude. From that act, their differences fade and they become very close friends.

Ajith's mother insults Vijay during a visit, which leaves him upset and he leaves. Later, she learns about Vijay's good character and grows affectionate toward him.

Geethu begins to appreciate Vijay and discovers that she loves him too. This realization deepens their bond and motivates their relationship.

Ajith explains that he has another sister who eloped with his former close friend on her wedding day. The betrayal shattered the family, and they disowned her and have not spoken since.

Vijay feels that pursuing Geethu could be seen as betrayal by Ajith, so he decides not to continue the romance. He sacrifices his own happiness to protect their friendship.

Geethu refuses to give up and asks Vijay to still consider their love. Her family arranges for her wedding, which raises the stakes and intensifies the conflict.

Desperate, Geethu drinks poison and is taken to the hospital. The danger to her life shocks everyone and forces a reckoning about love and loyalty.

Vijay rushes to the hospital with Ajith, and the truth about Geethu's feelings and the past is confronted. Ajith feels pride in Vijay's loyalty and courage.

Ajith, moved by Vijay's loyalty and character, gives his blessing for the couple's marriage. He is proud of his friend for staying true.