Evolution

A asteroid crashes to Earth, unknown creatures are released and threaten to destroy humanity. After further research, the creatures turn out to be some one-celled creatures... Or are they? Time passes and as the threat gets bigger and bigger. Soon enough, some short-sighted fools give the creature what it needs to grow in the form of massive heat, and it becomes the number one threat. From a one-celled organism to a mile-wide alien dynamo, the fate of the Earth and humanity depends on a few simple people.