Sivakumar is a timid young man, with a loving family in Madurai. His brother, a government official, earns the wrath of Simmakkal Ravi, the all-powerful gangster in the city. When he is murdered, Sivakumar and his father Kalayanasundaram plan to take revenge, in their own separate ways.

Set in 1995, Mark, a skilled mechanic and the son of a former gangster, stumbles upon a phone that has the ability to connect with the past, tries to save his estranged mother from a grim fate. While facing his own family's legacy, Mark must navigate through dangerous consequences of altering the past, as it causes unforeseen repercussions in the present.