Deep underground in a subway tunnel, they huddled around a fire while Rebecca, an elder, shared their origin story.

"The alien invaders took over the surface everywhere."

"But how?" asked a stranger.

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"By pursuing organized groups of people, which were most. Schools, churches, military, corporations, you name it."

"Why them?" asked another stranger.

"Easier way to round up people," Rebecca answered. "But thankfully, that's been the least of our problems."

"It's so ironic," said the first stranger.

"Ironic?" Rebecca blinked.

"Yes, many said vagrants represented humanity's downfall; ironic that we shall inherit the Earth."

Rebecca smiled while cooking a rat.