An Apocalyptic Invasion

Different groups of friends, living in the same time in different places.
One common enemy.
Faced with a threat like no other.
"They came from the sky... giant cats, paws the size of trashcan lids. The fearsome roars... people were dying left and right."
The Catwings, once again threatening the lives of people.
Except this time, their goal is different.
Who knew that this entire thing was caused by one person?