That chapter was good too, I liked the mob chase lots and I also like it how all the different pokémon have their own personality. However there are 48 shadow pokemon and plusle so if they are each going to have a unique personality, it could get confusing.
The only mistake I spotted was this:
You used 'for a while' twice in a short sentance. This doesn't sound good. Try something like:
Other than that, very good! Keep it up!