"Maybe you, I, and the fish only exist in the memory of a person who is long gone. Maybe no one really exists and it's only raining outside."
Beautiful, evocative visuals, but a slow, rather opaque story, one that's awash in Christian and apocalyptic symbolism. You can decide for yourself what it all means, or that it means nothing, and it's only raining outside.
My take: In this world of shadows, fossils, and death, the only hope for new life lies in the egg the girl carries around, similar to Noah's ark after the flood. In this telling of the tale, though, the Christ or God-like figure tells her that the doves don't return to the ark, and later crushes the egg. It seems rather dark and pessimistic - and yet, life seems to have a way of bubbling to the surface on its own, and when viewed from a distance, the world and all its troubles seem rather small.