Three estranged brothers—Francis, Peter, and Jack—reunite after a year of not speaking to each other. They embark on a train journey across India with the intention of bonding and healing their fractured relationships. Francis, the eldest, initiates the trip and imposes a strict itinerary he calls a "spiritual quest," though his true motives remain muddled. Peter, coping with impending fatherhood, and Jack, nursing a broken heart and dabbling in his writing, reluctantly join, carrying their own emotional baggage.

As they traverse the vibrant and chaotic landscapes of India, their personal conflicts and unresolved issues quickly surface. They engage in various quirky activities, confront their past grievances, and occasionally clash, revealing deeper familial wounds. Their spiritual quest gradually turns into misadventures as they are forced off the train, leading them to an unexpected path of self-discovery and reevaluation of their brotherhood.