Fireflies at the End of the World

Warning! Warning! The Moon's Tear is approaching. Contact with sea level in five seconds…

A meteorite-like object known as the Moon's Tear crashes into Earth. Countless dormant life forms begin to stir, emerging from the ocean onto land. They have sharp claws and fangs, and mutated bones. The end of humanity foretold in ancient prophecies has arrived. The land returns to a primeval state, and the apocalypse ushers in a new era for the human world…

How can a faint firefly struggle to survive in the apocalypse? Can the light of humanity's hope bring the land back into the light?