Goosebumps : Clubpenguin Let's get invisible!

(NOTE):This is a Goosebumps story originally made by R.L. Stine I've only added penguins to it

Goosebumps:Let's get invisible!

Now you see him.
Now you don't

Spoiler:

I went invisible for the first time on my tenth birthday.
It was all Explorer's fault, in a way. Explorer is my my puffle. He's just a mutt, part terrier part everything else. Explorer was my best friends name,and I had nothing else to name him. So of course,I named him Explorer. If he hadn't been sniffing around in the attic . . .
Well, maybe I'd maybe back up and start at the beginning.
My birthday was on a rainy Saturday. It was a few minutes before kids would start arriving at my birthday party, so I was getting ready.
'Till I heard a noise from upstairs......

What is upstairs?

Find out in Chapter 2!