What do you do when there's a mutant alien pet bent on your destruction, but nobody believes you? You fight back! Coop has a pretty normal life until his sister (and master manipulator) Millie brings home a box of pure evil: a tiny hairless Kat. Things get really weird when the extra-terrestrial feline turns the television into a ray gun and destroys the living room (but of course no one is around to see it!). Coop is determined to prove to the world Kat's evil plans!
It's not easy for a good-natured kid to stay out of trouble when an alien Kat is on the loose. This 10-year-old will have to think fast if he's going to save his life- and the planet- from the evil doings of one nefarious Mr. Kat!
The mysterious, hairless creature of unknown origins has landed "sharp-side up" in Coop's life. Kat puts up with Millie, but is out to destroy that pesky 10-year-old Coop, unless he can find some super tasty Fishy Frisky Bits. Yum!
Coop's 8-year-old sister is sugar and spice, but not always nice. She doesn't believe any of Coop's tales of Kat's evil ways. How could Kat be up to no good when he looks so cute all dressed up by Millie?
Coop's best friend is convinced there's a perfectly good conspiracy behind every logical explanation - especially when it comes to Lat! If only he can prove Kat's alien origins, the world will finally know he was right all along.
She's old, she's next door and she knows what Coop is up to before he does. Maybe her 170 gnomes are keeping tabs for her. Old Lady Munson never liked Coop, and now with all this cat business, she likes him even less.
The last thing this hard-working, single father needs after a long day at Burtonburger's House of Swap is to come home to mayhem and mischief. So why does Coop seem to be up to more trouble since Kat came on the scene.