After escaping from police custody, the political activist Sumit is on the run. He receives shelter in a luxurious apartment owned by a sensitive young upper-class woman. Being in solitary confinement, Sumit starts to question his ideological path and slowly begins to protest against his own party.

The final part of Mrinal Sen’s “Calcutta Trilogy” sees the metropole through the lens of a revolutionary activist in turmoil over his political path. Infused with documentary footage, The Guerilla Fighter lucidly comments on the rift between ideology and politics in a city on the brink of change.