Ranur Prothom Bhag is a heartwarming Bengali comedy about the endearing relationship between a young, mischievous girl named Ranu and her doting uncle, Mejo Kaka. As Ranu tries to embrace adulthood prematurely, her uncle's patience is tested while his love for her grows stronger. A delightful blend of humor and pathos, this film is a classic tale of family and childhood.

Sub-Inspector Tinkari Haldar comes to the house of the Industrialist Chandra Madhab Sen to inquire about a Suicide and Mystery starts to Unfold.