How much power does a single man, let alone a single leaf, have in the industrial world? In this wordless, all-ages graphic novel, our protagonist discovers a leaf that radiates a vibrant light. He returns to a detailed metropolis depicted in somber grays and blues and searches for answers. During his quest, he stumbles upon a man who knows what's really happening in the city's labyrinthine ducts; a woman who spends her life studying and classifying obsolete flora; and the truth about the ever-dwindling environment.