Traveling across America, writer Walter Hillbury ends up in the town of Mohay - a paradise among pristine nature. There is clean air and clear water, beautiful women and strong men. True friendship, neighborly mutual assistance, homemade whiskey and village dancing are valued here. However, a terrible secret hangs over the town. Darkness comes out onto the streets during the rainy season, darkness moves in underground tunnels dug by someone unknown by the hills, darkness fills the houses of city residents. Walter Hillbury will have to face this darkness, because it is impossible to leave Mowhay...