Synopsis

The Antithesis, plant-based monsters that will devour everyone in their way, have been plaguing the galaxy since thousands of years. Twenty-five years ago they reached Earth. The Protectors are an interstellar alliance that opposes the Antithesis.
When the Antithesis attack her graduation party, Caitlin MacCallan is chosen by the Protectors to fight them. She will find more than just Antithesis to fight...
This is a crossover fanfic of Ravens Dagger's Stray Cat Strut and Aest Belequa's Halcyon Nightmares