Four brothers hunt for the killer and the truth behind their loving foster mother who was murdered in cold blood, .

When Mary John Kurishingal is murdered her four brothers try to unearth their mother's death which takes them to the depths of Kochi. ACP Balaji, a righteous cop is also investigating it. The brothers find out that the murder was a planned hit by underworld don Sayippu Tony and try to avenge their mothers death—netrebelforce