A widower and his daughter-in-law have an affair while his son is away for a few days.

Krishnaswamy (Kamal Haasan) is a widower living happily along with his mother-in-law Saraswathi (S. N. Lakshmi), daughter Kaveri (Mahanadi Shobana) and son Bharani (Mahanadhi Dinesh) in a village near Trichy. Dhanush (Cochin Haneefa), a con from the city,

Raja and his dad, who live in Hong Kong, are devastated when an accident leaves Raja’s father on the verge of death. He decides to reunite his father with his grandfather in order to make them happy.

Still guilt-ridden over the accident that took his family’s lives, Eric Norris discovers that his body is host to a parasite from another world. Except, it is more than a parasite: it carries his DNA.