| Director | Mani Ratnam |
|---|
The film opens in media res on Chennai's Napier Bridge, where hitman Inbasekar "Inba" shoots student activist Michael Vasanth, causing him to crash his motorcycle into the Cooum River. The assassination attempt is witnessed by a bystander, Arjun Balakrishnan. The narrative then shifts into a non-linear, three-part portmanteau structure, exploring the backgrounds of the three men leading up to the shooting.
Inba grows up in poverty after being abandoned by his elder brother, Gunasekaran "Guna," and turns to a life of violent crime. He marries Sashi, an idealistic woman who endures his frequent domestic abuse. On Guna's recommendation, Inba becomes an enforcement thug for Selvanayagam, a corrupt and ruthless politician who exploits Inba's desperation for cash and leverage.
Michael is a brilliant, fiercely independent student leader who actively opposes systemic political interference in university elections, positioning himself as a direct threat to Selvanayagam's youth manipulation strategies. Michael is also romantically involved with his neighbor, Geetha. Recognizing Michael's influence, Selvanayagam attempts to neutralize him by offering a fully funded scholarship to a prestigious foreign university. When Michael flatly rejects the bribe, Selvanayagam orders Guna and Inba to intimidate the student movement. Inba orchestrates assaults on several campus activists, but is ultimately met with defiant, physical resistance from Michael and his core supporters.
Arjun is the carefree, politically indifferent son of an IAS officer, whose sole ambition is to secure a visa and relocate to the United States. He falls in love with Meera, a free-spirited woman. During a playful romantic dispute, Meera challenges Arjun's sincerity, prompting him to hitch a ride on Michael's motorcycle to pursue her. As they cross the Napier Bridge, Inba intercepts them and shoots Michael multiple times before fleeing. Urged by Meera, Arjun overcomes his initial panic and rescues the critically injured Michael from the river, rushing him to the hospital where he narrowly survives.
Following the incident, a transformed Arjun tracks Inba to demand answers, but is brutally assaulted and left with a broken arm. During his convalescence, Arjun renounces his plans to emigrate, choosing instead to join Michael's grassroots political movement alongside fellow youth leaders Suchi and Trilok. Meanwhile, Selvanayagam orders Guna to eliminate Inba for failing to neutralize Arjun as an eyewitness. Upon discovering the betrayal, an enraged Inba kills Guna. Selvanayagam quickly manipulates the situation, promising Inba protection if he kidnaps Arjun, Suchi, and Trilok to prevent them from filing election nominations.
Sashi, desperate for Inba's reform, gives him an ultimatum to meet her at a railway station to leave their criminal life behind; when he fails to appear, she abandons him permanently. Concurrently, Inba's longtime associate, Dilli, undergoes a crisis of conscience regarding their violent lifestyle. Dilli attempts to help the captive students escape but is caught and executed by Inba. Arjun manages to flee and contacts Michael for assistance, but Inba corners him back on the Napier Bridge.
Michael arrives, sparking a violent, final confrontation. Michael ultimately overpowers Inba but spares his life, leaving him bound on the bridge to be arrested by arriving police forces. Inba is imprisoned, while Michael, Arjun, Suchi, and Trilok sweep the student independent coalition seats, successfully entering the legislative assembly as reformist lawmakers.