Kaanchi: The Unbreakable is a musical romantic drama that follows the story of Kaanchi (Mishti), an independent strong girl who lives with her mother and sister in a village called Koshampa. She is in love with her childhood friend Binda (Kartik Aaryan) and their families decide to get them married. However, their lives take a turn when the son of a rich industrialist, Shyam Kakda (Mithun Chakraborty), falls in love with Kaanchi and kills Binda. Devastated, Kaanchi vows to take revenge on the Kakda family.