Autumn is coming, and golden leaves are already full of color on the withered grass. The once lush vegetation is thinning, and the sky is clouded with fog. Hiking in quiet native places and a beloved wooded park near the house - what could be more comfortable during the cold weather? And here, into the measured life of one person, which has already begun to fall asleep, comes the marvelous Emerald - an island that suddenly appears right in the middle of a small local river located in the forest.