In 1971, amid rising tensions between India and Pakistan over the liberation war of East Pakistan, Pakistan navy, in a top secret mission, plans an attack on Indian majestic-class aircraft carrier INS Vikrant, to gain control over the waters of Bay of Bengal. They send their best-in-class submarine PNS Ghazi, but are intercepted by an Indian submarine INS Karanj (S21). An underwater attack ensues.

Senapathi (Prakash Raj), a God fearing boss of a crime family, is on a tour to a temple with his wife Lakshmi (Jayasudha). Despite being escorted by heavily armed men, assassins disguised as cops attempt taking down Sena and Lakshmi, but they evade the assault. His children are notified of this. Sena has a daughter (RJ Sindhu) and three sons: the eldest being Varadan (Arvind Swami), who runs a part of his empire in Chennai. The second, Thyagu (Arun Vijay), operates his business in Dubai with Arabs. The third, Ethi (Silambarasan), runs the Serbian section of Sena’s empire.

The lives of a few people get affected when ego clash erupts between a few cut-throat loan sharks.

A young mechanic falls in love with a rich girl; her father plots to break their relationship, as a result, the mechanic murders a manager while trying to save the girl’s honor.

Satyam begins with Sathyam (Vishal), an assistant police commissioner rescuing a hooligan from encounter thirsty cops, only to arrest him later. He reminds his fellow cops that a cop’s duty is to kill crime not criminals. Sathyam meets his first challenge in tracking a mysterious killer of three ministers. In the process, he finds the culprit Manickvel (Upendra), only to receive a rude shock to know his identity.
For, the murderer is none other than a former police officer, who inspired Sathyam to take the cop job. Revealing the reason behind his change of mind, the ex-cop says that he is on a killing spree as he failed to set right things in khakhi uniform.

Viswanath (Rajinikanth), a famous lawyer, stays with his widowed mother (Vijayakumari) and physically handicapped sister (Uma). He sends Jegan, a rich magnate’s son (Sathyaraj) and Lokaiya, two criminals to jail on the charge of rape and murder of an innocent girl. Jagan’s father, GMK (M N Nambiar) uses his influence and starts creating trouble in Viswanath’s life. GMK succeeds in getting Viswanath imprisoned on a trumped up charge. His heartbroken mother dies. Once out of jail, Viswanath sets out to punish the culprits when he temporarily loses his eyesight…

A former football player struggles to fulfill the dream of his friend and seek revenge for the death of his father.

Ravi (Ravi Teja) works as a collection agent of ICICI in Bangalore and leads a happy life along with his friends and his father Mohan Rao (Prakash Raj) who wishes to see Ravi married to a girl soon. Once Ravi rushes to a Hospital where his friend (‘Satyam’ Rajesh) is admitted as he tried to commit suicide by drinking nail polish solution and asks the reason for it. Then he describes about the traits of Shruti (Shruti Haasan) and her uncle Crazy Mohan (Brahmanandam). The duo have a habit of cheating gullible young men including his friend and Ravi decides to teach them a lesson. Ravi enters their life as a gullible youngster and starts torturing them. Crazy Mohan’s plans and attempts always go in vain before him. As a part of their cunning plans, Crazy Mohan advises Shruti to ask Ravi to marry her. As fate would have it, Ravi also comes with a marriage proposal to Shruti. Then the pair approach Mohan Rao and tell him that Ravi is in love with Shruti and that he proposed to her.

Kichu wants to settle in Sweden with Kalyani, his girlfriend. Kichu had been doing small jobs breaking the law for his well-wisher, Sridharan. As he wants to settle abroad, Sridharan asks him to do a job that will provide him with a lump sum. Kichu accept

The film begins a year after the events which occurred in the prequel Saamy.
DCP Aarusaamy “Saamy” (Vikram), who had been transferred out of Tirunelveli, leads a happy life with his now-pregnant wife Bhuvana (Aishwarya Rajesh), who intends to pursue IAS. However, the people who were asking what happened to Perumal Pichai (Kota Srinivasa Rao) assume he might be in Colombo Sri Lanka with his second wife and three sons: Mahendra Pichai (O. A. K. Sundar), Devendra Pichai (John Vijay), and Raavana Pichai (Bobby Simha). Raavana leaves for Tirunelveli and finds out that Saamy killed his father. Saamy applies for a transfer to Tirunelveli to stop Raavana, which is approved.

Pugazh, a young man, fights against a corrupt politician who wants to acquire the playground of his area, which he and his friends use for sports activities.

It is a roller coaster of love, sentiment and emotions that are attached to technology that has been used with a car named Roger.