Zee Studios, BSK Network & Entertainment Pvt. Ltd., MAD Films and Naresh Agarwal Films’ Mom is an emotional family drama. The film is about a school teacher Devki Sabarwal (Sridevi), whose life revolves around her husband Anand (Adnan Siddiqui) and step-daughter Arya (Sajal Ali), even though Arya hates her for being a step mother.
One day, when Arya attends a party with her friends, she resists emotional advancements from a gang of four boys, who land up raping her and leaving her in a gutter.
Seeing law taking its own sweet time to deliver justice for her daughter, Devki seeks help from a small time detective Dayashankar Kapoor (Nawazuddin Siddiqui) and decides to teach the four boys a lesson which they will never forget.
Does Devki become successful in her mission to teach a lesson to the four boys, does justice get delivered in the favour of Arya is what forms the rest of the film.