Sri Dushyanth Jayaprakash witnesses a girl being abducted by four men in the early morning, and he suspects the victim is Parvathy Ammu Abhirami, the daughter of his school teacher, Vasanth Rahman. Vasanth is beside himself with worry as Parvathy has gone missing. Later that evening, Sri spots the car involved in the abduction and, accompanied by his friends, goes to the building where the car is parked, determined to uncover the truth.
Vetri Atharvaa Murali, an aspiring film director struggling with addiction, is filming a short film. Unbeknownst to Sri, the “abduction scene” he witnessed earlier that morning was actually part of Vetri's film. Earlier that morning, Vetri spotted Parvathy at Vasanthi bakery shop. Vetri's day turns worse when he discovers that a film director has used Vetri's story for his project and also that his original script has gone missing. Distraught, Vetri begins consuming excessive amounts of drugs, but his friends rescue him. Earlier, a mysterious individual is seen entering Vetri's residence and stealing his script.
Inspector Selvam R. Sarathkumar is assigned to investigate a hit-and-run case involving Minister Iyyappan's sons, Bala and Ashok Krishna. Despite their influential connections, Selvam initially refuses to release them but eventually accepts the bribe and releases the brothers after verifying that the accident victim is safe. The script thief, Thyagu, hands over the stolen script to Selvam, who promptly orders his arrest. Seeking revenge against the inspector, Bala orchestrates an attack on Selvam's son Vetri. Bala's goons arrive at Vetri's house, where Sri and his friends are also present, having to discover Parvathy's whereabouts. Vetri subdues the attackers and leaves, where Sri confronts Vetri, who reveals that the earlier abduction scene was merely a film shoot. Sri shows Vetri the photo of Parvathy and expresses concern about her disappearance. Vetri discloses that he saw Parvathy earlier that morning at Vasanthi Bakery and they exchanged phone numbers with Sri. Selvam learns about the attack on his son and sets out to resolve the issue.
Thyagu reveals to police that he saw Parvathy earlier that morning, getting into a grey Hyundai i20. The investigation leads them to the spot where Parvathy was last seen with her bicycle, and Vasanth asks his wife Shobha to contact her brother, the owner of the grey Hyundai i20, to inquire about Parvathy's whereabouts. After inquiring at Vasanthi Bakery, Sri breaks down in tears, revealing that he had proposed to Parvathy the previous evening. Vetri, after confronting director Kishore about his script having been stolen, gets a clue from his neighbor that the script thief can be identified by a snake tattoo on his left hand. Selvam reprimands Bala and physically assaults him. The minister personally visits the police station, but Selvam refuses to release him citing the filed FIR. With Vetri's help, Sri learns the address where Parvathy is being held, and he along with his friends rushes to Porur to rescue her. Upon confronting Parvathy in her uncle's house, Sri learns that she escaped to flee her alcoholic father, Vasanth, who attempted to misbehave with her.
Sri confronts Vasanth about his horrific behavior, revealing that Shobha had secretly helped Parvathy escape to protect her. Meanwhile, Vetri tracks down Thyagu who reveals that he handed over Vetri's script to Selvam, Vetri's father. Selvam discloses that Director Kishore had orchestrated the script theft and that the voice Selvam heard was that of Sathya, Vetri's friend, and Kishore's assistant director. Selvam had submitted the script and audio recordings to the FEFSI association for action. In an emotional moment, Selvam shares a painful family secret: Vetri's mother, Ilakkiya, died from grief over Vetri's passion for cinema. As they share a poignant moment, Minister Iyyappan's men fatally shoot Selvam, avenging the minister's sons' public reprimand. Meanwhile, consumed by guilt, Vasanth writes an apology, acknowledging his addiction had driven him to behave inexcusably and take his own life.
The film concludes with Sri hugging his father, and Vetri paying his respects at his parents' graves, Selvam and Ilakkiya.
