Laden with laughs, this socially relevant tale delves into the life of Vijayan, the village school teacher, who believes that his degree in economics is sufficient for him to succeed in the business ventures he undertakes. Taking long leaves of absence from work, he roams around with his schemes, all of which turn out to be downright failures.
The movie opens with a light portrayal of the misery of his wife Shyamala and their two daughters, with Vijayan away on his latest venture — an attempt to shoot a short ad film. It ends, predictably, with Vijayan taking to his heels when it is apparent that he has never seen a film being shot in his life before.
Karunan "Mash," Vijayan's father, as a last resort to reform his son, suggests that Vijayan undertake the annual pilgrimage to the Hindu hilltop temple Sabarimala. Despite his initial protests, Vijayan undertakes his pilgrimage, by observing the customary 41-day fasting and abstinence.
Sabarimala changes him. On his return from his pilgrimage, his family discovers to their dismay that matters have swung to the other extreme. Vijayan takes faith to his heart, embraces vegetarianism and adopts a life of prayer, frugality and abstinence, eventually forsaking his debt-ridden family for a life at an ashram.
His version of ashram life is one of round-the-clock prayer and an escape from daily responsibilities and work — which doesn't go well the other residents. He soon finds himself unwelcome there and returns to his home, to discover his family now reasonably well-off from a small business his wife started soon after he left.
The film ends with Vijayan returning to his job as school teacher and going with his wife and children to his home through a road where Communist leaders and Sabarimala pilgrims are marching.