Kusum Dola is a story of three lives, Ronojoy, Imon and Rupkatha, whose lives get changed after certain incidents. Imon, the daughter of police officer Jayanta Mukherjee lives in Sundarpur where her father is posted. But Imon is everyday stalked and teased by Gogna, a local spoilt brat. Jayanta warns Gogna against teasing his daughter. Gogna too threatens him. On the other side, Ronojoy, an IPS officer lives in Kolkata with his joint family where people have different thoughts. On a trip to Jaisalmer, Ronojoy meets Rupkatha and both develop feelings for each other but they can’t express their feelings.Ronojoy tells Roopkotha that he will call Roop as he needs to say something to Roopkotha.