Murugan, with his tools and expertise, protects Puliyoor's villagers from deadly tiger attacks. However, Daddy, an illegal drugs dealer, takes advantage of Murugan's innocence and wrongly frames him.
Vimaanam is based on the life of Saji Thomas, a differently-abled man from Kerala. It showcases how Saji, who had speech and hearing impairment, fought all odds and built a lightweight aircraft from recycled materials without any external support.
Madhavan Mahadevan, who comes into the city from a village to see off his sister-in-law and her daughter after the death of his elder brother, an upright Customs Officer (KB Ganesh Kumar). While running around to claim the insurance money, he comes to know that his brother was actually murdered by the underworld don Irumbanakkal John (Joy Mathew).