Spies from different nationalities stationed in a small Asian island work out a plot to create an international incident taking profit from it. Defrauding CIA through fake reports and running a front company using operating funds, they control the island and use the skills acquired in the service of their countries to pursue their personal dreams of wealth and happiness.

The film centers on three middle aged men staying in a hostel. At a later stage, another tenant comes to stay in the hostel, where he falls in love with the eldest daughter of the hostel owner. The entire film was based on how the old three tenants trying their best to chase the new tenant and win the heart of owner's daughter. The plot is based on the Tamil film Indru Poi Naalai Vaa.

Abirahasa is the 231st movie in Sinhala cinema.

Lasanda is the name of the girl played by the famous actress Nita Fernando. Her acting amplifies the moral qualities of her heroine – a proud woman, irreconcilable to everything that degrades human dignity. The world is divided into two clearly delineated camps. In one of them are the rich mine owners and their accomplices, in the other - the working class, the poor, forced to make ends meet with odd jobs. The first reign supreme, believing that they can buy off any crime with money, although they fear an organized uprising by workers. The second are almost powerless in the face of tyranny and violence; their existence, their future depend on the whim of their masters.