এমিলের গোয়েন্দা বাহিনী (1980)

Emil came to Dhaka from Khulna to receive the prize of essay competition titled 'Don't Capture Free Birds'. On the way back, he lost 500 taka on the train. The money was given by his mother to his grandmother. Then the rescue operation started. He finds a group of local children in Dhaka as his companions.