Following the
economic crisis in Sri Lanka, a
Tamil family of four – Dharmadas "Das", his wife Vasanthi, and their sons Nithushan "Nithu" and Murali "Mulli" – flee their native
Jaffna, via
Valvettithurai, and seek refuge in India through
Rameswaram, with the help of Vasanthi's brother, Prakash. As they
illegally enter the country, a group of police constables, led by A. Bhairavan, apprehend the family but release them after realising their innocence. Nithu and Mulli emotionally appeal to Bhairavan's compassion by showing him a puppy they found on the shore, pretending it is their pet. The family, along with Prakash, arrive at a neighbourhood in
Chennai, where they pose as
Malayalis to
Inspector Raghavan, who leases the vacant floor of his house to them. Das soon finds a temporary job as a driver for his neighbour, Richard. Despite Prakash's warnings to keep a low profile due to their distinct
Sri Lankan Tamil dialect, Das and Vasanthi become closer to their neighbours despite their fear of being exposed. Vasanthi befriends Mangaiyarkarasi, an elderly woman, and her husband, Gunasekar. In Rameswaram, a bomb blast occurs, which Balwan Singh, a ruthless
ACP, starts investigating. Bhairavan's associates want to inform Balwan about Das and his family, who they believe infiltrated India.
CCTV footage showing Das disposing of waste in a dustbin near the blast site, is retrieved. However, Bhairavan, who likes the family, prevents his colleagues from revealing their identity to Balwan. During an interrogation, Balwan severely beats a suspect, who is later hospitalised. At risk of being arrested if the suspect dies, Balwan is under immense pressure to find the actual culprits behind the bomb blast. Raghavan's daughter, Kural, is in a relationship with a boyfriend who secretly visits their house. However, Nithu mistakes him for a thief and apprehends him. During the ensuing argument, Kural discovers her boyfriend's infidelity and thanks Nithu for unintentionally revealing his true character. In turn, he opens up about the fact that he left Sri Lanka and his dismay towards his father for uprooting their family and seeking refuge in India. Das reveals he discarded the puppy, leading to a heated argument. Nithu and Das have a fight where he expresses his frustration about his menial jobs in Chennai. Eventually, they come to understand each other and start communicating again. A disheartened Nithu, who found that his girlfriend had married someone else, is cheered up by his family. In Rameswaram, Balwan and Bhairavan investigate Das' family to avoid departmental punishment. They trace the family through a taxi they hired from Rameswaram. When Mangaiyarkarasi dies from the shock of her husband dying, who was revealed to be sleeping, Das rallies the neighbours to attend her last rites. Richard terminates Das's temporary job but reappoints him when he reveals his true identity as a Sri Lankan. Kural develops feelings for Nithu, and they grow closer. At Mangaiyarkarasi's funeral, the entire neighbourhood pays their respects. An alcoholic youth, previously considered troublesome, speaks up, thanking Das for saving his life. He shares his emotional story of how his mother had
Alzheimer's disease and eventually died, making him suicidal and alcoholic. Das unintentionally saved him from a poisoning attempt and showed genuine concern for his well-being. The youth, now
sober, apologises for past troubles and bids farewell as he is leaving for
Dubai. The neighbourhood, which previously judged him harshly, appreciates his story and holds Das in high esteem. They learn about Das and his family's true identity as Sri Lankan refugees, bonding with them. Just as the neighbourhood is coming together, Balwan, Bhairavan, and their team arrive, conducting a house-to-house search to apprehend Das's family. However, when they finally reach Das's house, Bhairavan claims they are not the family he met earlier in Rameswaram. Balwan is frustrated, having failed to close the case, and leaves abruptly due to an arrest warrant issued against him as the suspect has died. Das confronts Bhairavan about his deception, and Bhairavan reveals that the whole neighbourhood refused to disclose Das and his family's true identity. Moreover, the entire colony spoke in the Sri Lankan Tamil dialect to help Das's family escape the police investigation. The puppy returns to Das' family. == Cast ==