The Last Documentary Fossil

In 2118, alien X drove a flying saucer to explore the abandoned earth where pollution had caused human extinction. A batch of decaying "image fossils" (abandoned old movies) made X full of doubts about these old images: Why do humans build smoking machines? Why did you stand in front of the commander's podium and be scolded? Is the way people on Earth fight collective suicide? Looking at the world dominated by human desires from an outside perspective, the humorous and ironic annotations may become doomsday prophecies...