The incidence of hydatid cyst is reported more in pastoral farming regions. The liver is the commonest organ involved. Pulmonary hydatid disease is less common and pleural hydatid is rare even in endemic regions. The disease is unique in that it is outside the visceral pleura but inside the parietal pleura. Pleural involvement usually happens following the rupture of a pulmonary or hepatic cyst into the pleural cavity causing secondary pleural hydatidosis. We report a case of a 61-year-old male who presented with signs and symptoms of a massive unilateral pleural effusion to highlight a not so common cause of unilateral pleural effusion and to address the complications associated with it and possible modes of management.