Babu Mohan

H2o is a triangular love story between a Kannadiga and a Tamilian vying for the love of a girl called Kaveri, it is actually a metaphorical reference for the river Cauvery dispute between Karnataka and Tamil Nadu.

When Venkateswarlu arrives in Hyderabad and meets an engaged girl at his father's friend's house, his life turns upside down after she unexpectedly confesses her love for him.

Misra, a dacoit, is arrested by SP Chakravarthy. Misra wounds himself and is taken to the hospital, where Chakravarthy is waiting for his wife Geetha, who is pregnant and gives birth to twins. The doctor says that both children have a reflection mentality (if one person is hurt, the other is also hurt) depending on the distance. Misra escapes and takes one of the twins with him, hurting Geetha. Chakravarthy pursues him but is unable to find the child and shoots Misra. The child is saved by the other twins due to their reflection mentality, and a female laborer witnesses it. The child is taken by her husband, and they adopt him, while already having a daughter. One day, in an accident at a construction place, the couple is killed. As a result, the two children become orphans. As they grow up, one of the twins, Deva, becomes a thief for earning along with his friend Kasi another orphan. On the other hand, Geetha goes into a coma, and Chakravarthy takes her to America for the cure, where the other twin, Ravi Varma is brought up. He returns to India as a rock star to give performances. He is received by Chakravarthy's friend, who wishes to marry his daughter Manga to him, but Manga is in love with Deva. At the airport, Ravi Varma falls for Ooha, the daughter of Akkamamba, who is organizing his programs. Simhachalam, Akkamamba's brother, also wishes to marry Ooha. Meanwhile, at home, Manga advances with Ravi, thinking he is Deva. One day in a restaurant, they see each other and find that they are identical, which leads to humorous misunderstandings. Meanwhile, Deva's sister Kasthuri witnesses a ruthless don and flutist Mitra, the son of Misra, who murdered an inspector on the road for refusing to stay corrupt and providing evidence against him in court. Enraged, Mitra attempts to rape her, and Deva fights with him, so Mitra wants to take revenge against Deva. He sends his henchman as the groom to Kasthuri, but Deva breaks up the plan and makes his sister's marriage to another man. Deva obtains all pieces of evidence detailing Mitra's crimes and gets him jailed. Later, the court decides on the death sentence for Mitra. As months pass, Kasthuri becomes pregnant and is admitted to the hospital for delivery. Deva asks Ravi to stay at the hospital as he is going in search of money. Ravi visits his father Chakravarthy. At the same time, Mitra escapes from jail, comes to the hospital to kidnap Kasthuri, recognizes Chakravarthy as the one who killed his father, and also gets to know that Deva is his son. Mitra blackmails Deva to get Chakravarthy to release Kasthuri. Deva, who does not know that Chakravarthy is his father, goes to his house where Geetha also comes out from the coma by Deva's touch and he discovers that they are his parents. Finally, Deva and Ravi join, protect their father and sister, and bring Mitra to justice. The story ends with the duo marrying their respective love interests.

Raju, a coolie who is wrongly accused and sent to jail. He escapes from the jail and goes to Singapore in order to get revenge for injustice.