The principal characters of the series include Vani Bhojan and Kalaiyarasan.

[3][4] Sengalam is a revenge drama set in the backdrop of a political feud.

Their story is interspersed with what happened a couple of years back leading to the reason for the brothers’ seeking revenge.

[10][11][12] Cinema Express rated it 2 1⁄2 out of 5 and commented, "There is no doubt that politics cannot be without the influence of class and caste, and Sengalam subtly brings in these angles in the exploration of how innocent individuals are often caught in the crossfire of devious plots.

"[13] SouthFirst called it "A riveting political thriller that leaves you wanting more.