Fiddle is about a group of youngsters who are also students of the Music College, form an organization called Satkala Sangham under the leadership of Sandeep. They move from village to village doing programmes and help the needy and the poor with the money that they earn. On one such journey they happen to camp at a hill station called Ponmudi, where Sandeep and his friends get caught up in the mysteries surrounding the life of a girl named Gayatri.