A parable centering on an old man who lives a secluded life in the desert, alone with only his memories and photographs. His wellspring, once a source of joy and hope for thirsty passersby, is now rarely used. No longer able to find comfort in his memories, he turns all his photographs to face the walls.

A pianist named Garvey, while traveling on a tour, gets off the train to buy cigarettes, and learns from a salesgirl that the cities imagined by Grin really exist. Forgetting about his tour, he goes to one of these cities, where he meets the captain of “The Waverunner”…