On a foggy winter journey, the Bonolota Express carries strangers burdened by secrets whose lives begin to collide within the train’s confined corridors. As the night unfolds, personal and political crises erupt, exposing hidden grief, moral decay, and moments of unexpected compassion amid chaos and revolt. By dawn, the train moves on, leaving its passengers irrevocably changed by a single journey where illusions collapse and human truths emerge.

The story starts about a war commander's fighting against the Razakar and East Pakistani Army in the time of the liberation war, Bangladesh. After the death of the commander, his elder brother becomes Shipahi to protect the mother nation.