Sheila Grace Mirabel

I watched the part 1 and i thought in this movie had the same cast and its about the invisible boy? Remember the end of the Goosebumps part 1? They forgot to vanish the invisible boy! How come its all about slappy again?! But BTW its a nice movie and the ending i hope they publish the part 3 which similar to the end of part 2 how will escape R. L Stine from the book. And as usual how will they destroy slappy.. Im excited