A young man sets out to avenge his father’s death but soon realises that violence is not the key to his salvation. His life changes when he meets a young woman, who helps him rediscover himself.

Patra tells the story of an innocent youth who gets caught between the politics of two gangsters and how smartly he overcomes the same. This is an action-thriller that promises an explosive climax.

The film opens with the discovery of a corpse of a teenage girl who was brutally murdered.
Arun Kumar (Vishnu Vishal) is an aspiring filmmaker who wants to make a movie on psychopaths. After being rejected many times and due to pressure from his family, he decides to give up his dreams and become a sub-inspector with the help of his brother-in-law Doss (Ramdoss), a police officer himself. He moves to Chennai to stay with his sister Kokila (Vinodhini Vaidyanathan), Doss, and their daughter Ammu (Abhirami). Ammu gets into trouble when she makes Arun sign like her father in her report card. Her class teacher figures this out and thinks she signed it herself. He meets and befriends Ammu’s teacher Viji (Amala Paul) and her niece Kayal (Baby Monica).

Balaraju, the head of his village, lives with his wife Baby, his two sons; Chandrasekhar Rao and Bangari, and his two daughters. He helps Chandrasekhar become a doctor and builds a local hospital. On the day it opens, Chandrasekhar comes back home with his lover Kausalya, also a doctor. Both express their wish to marry, which Balaraju agrees to. But, they also wish to settle abroad, which upsets Balaraju, leading to the separation of the father and son.
25 years later, Chandrasekhar, a successful doctor in London, tells the story to his son Abhiram and daughter Indu. Abhiram decides to go home to Balaraju and attempt a reconciliation. He meets his friend, Bunny, at the airport and goes to the village on Bunny’s bike the next day. On the way, he witnesses a cockfight organised by Bangari and Baachi; he gets the help of Balaraju to pardon Bangari and get Baachi arrested. Abhiram then introduces himself as a student from London who came here to learn agricultural practices and martial arts. He particularly impresses Balaraju’s family when he saves a child’s life and so is allowed to stay with them.

The story starts with floods at Ranga Saipet in Warangal District. Houses, trains, and people inundate in floodwater. Siddharth (Mahesh Babu) and his friends save the people up to their maximum effort. Eight of his friends assist him in the rescue. On the other hand, the Chief Minister (Kota Srinivasa Rao) recommends the candidature of Pappu Yadav (Irfan Khan) for Assembly Elections. Pappu is a goonda who wishes to earn big through politics and power. To get the attention of people, he announces a sum of Rs.5 crore for flood victims.

Faction feud in Tamil Nadu results in the death of Singaraayar’s (Nagineedu) brother and he, along with his two sons Dharma (Ravi Prakash) and Kaali (Sugunthan), vow for revenge. Time turns and comes to Chennai. Here lives Sakthi (N. Santhanam), an innocent and somewhat unlucky guy whose parents are no more and is ousted out of his job. His life takes a turn with a correspondence that he has got five acres of land in his hometown in Tamil nadu. He decides to sell that land and sets off to the village. In this process, he also meets Vaanathi (Ashna Zaveri) who is the daughter of Singaraayar. However, much to Sakthi’s bad luck, he happens to be the son of the man who killed Singaraayar’s brother and he ends up in their home itself. He takes advantage of a tradition of their house that not even one drop of blood should fall inside the house. Vaanathi falls for Sakthi in the mean time. He escapes in all the plans much to the fury of Singaraayar. Soon the story takes a twist when Vaanathi, not knowing that Shakthi is the son of the man who killed her father’s brother, falls for Shakthi. Her cousin Raja comes to know about this and refuses to marry Vaanathi, though Shakthi had convinced him earlier in order to prolong Singaraayar’s plan. Singaraayar had moved the engagement to the temple so Sakthi cannot prolong the plan to kill him any longer. When Raja tells Singaraayar about Vaanathi’s love, he slaps Raja. And in the engagement Dharma carries a basket he thinks Shakthi is hiding in, away from the temple to kill him. It is then revealed that Shakthi is still in Singaraayar’s mansion. Then he runs away from the house only to be chased by Singaraayar’s men.

Veera, a forest brigand was killed by police officers. A police officer who is suspected to have become this brigand’s man has gone underground and a team of cops (Richard, Bharani and co) are sent to the forest to capture/kill him. They meet Akhila (Arundhati), a woman who claims to live in the forest, who, they think is a prostitute. Meanwhile, in a parallel track, there is a young woman Dhamini (Manochitra), who agrees to be driven to the same forest by Sivaji (Vimal), a debauched car driver.

Indian army special forces execute a covert operation, avenging the killing of fellow army men at their base by a terrorist group.

When the Justice League are captured by Lex Luthor, Superman’s dog, Krypto, forms a team of shelter-pets who were given super-powers: A hound named Ace, who becomes super-strong, a pig named PB, who can grow to giant-size, a turtle named Merton, who becomes super-fast, and a squirrel named Chip, who gains electric-powers.

Kaali (Karthi) is an impulsive and short-tempered working class man who works in an IT company and enjoys playing football during his free time. His best friend is Anbu (Kalaiyarasan), who is a young political aspirant. They along with their gang live in the dilapidated flats of the housing board in Vyasarpadi, North Chennai. In a long-standing bloody feud, two factions of a political party have been laying claim to a wall on which they can paint the portraits of their respective political leaders. Anbu, under the local leader of one of the opposing parties, Maari (Charles Vinoth), is determined to claim that wall for their own party. The other party chief is Kannan (Poster Nandakumar) and his son Perumal (Mime Gopi) who are hell bent in making sure that their opponents efforts go in vain. The painting of Kannan’s father’s face has been on the wall for two decades, since the start of the feud. The two parties and their supporters get into frequent clashes and scrapes. In the meantime, Kaali falls in love with Kalaiarasi (Catherine Tresa), and she too reciprocates his feelings.

A young man gets into trouble in a foreign country.

According to review by IndiaTimes:
The movie starts with a chase sequence – a girl is being chased by a bunch of goons as per the order of a dreaded politician. Four boys come to her rescue and she is taken away by them in a car. The chase continues for around an hour’s time, in the course of which two of the boys lust after her. The third guy wants to get rid of her to avoid unnecessary consequences, and the fourth guy falls in love with her. The worse thing is, the girl, too, loves him back without any convincing reason. Even when the indefinite car chase happens, with the goons yelling ‘thookku da’, ‘poda’, ‘vaada’, and so on, we are shown two songs featuring the hero and heroine. The latter half of the movie is hilariously terrible with some pointless skin show, never-ending fight sequences, funny dialogues and bizarre background score. This is a film which shouldn’t have been made.