Munnudi is a story that revolves around Shivu, a village boy who dreams of studying and excelling in the field of science someday. The story is set in rural Mandya in 1990s. He is taken off school at a young age and is sold off to a jaggery mill as bonded labour. One day Shivu's curiosity is triggered by droplets from leaky roof. He accidentally discovers the raindrops to behave like a lens thus starting his journey of various experiments at home. As the story progresses, the jaggery mill is forced to shut down due to debt. This provides an opportunity for Shivu and other kids to enroll in a school. The boy who dreamt of being big someday starts to study well. As he discovers a homegrown experiment, he is accused by his science teacher of stealing a piece of equipment from the school lab and punishes Shivu. Not long after, the teacher realises, it wasn't the boy who stole the equipment. However, Shivu simply has lost passion for his studies unlike before. The teacher repents his actions and tries to cheer him up along the way and struggles to motivate him. After all the effort, the boy gets back his interest and starts to regain his lost passion. He walks the heights and wins numerous competitions, thus beginning his journey in science.