Mysterious Box 1

For a contest at [link]
The idea is to draw a comic using adoptables based on this scenario: "An adoptable notices a strange new box..."
I used two sisters, my Felicity [link] 's Razzmatazz [link]
Oh yeah, and my Hector is in the last panel: [link]

So. Apparently I lost my tablet pen when I moved back home. SO SAD. so no colors. bummer.

Also, can you guess what I based this off of?