Well, i guess it's farewells then.
Are you a mouse? :-p
As a native speaker i'd like to say that "pöllöt seuraavat meitä" is the official way to say it but in finnish it's okay to say "pöllöt seuraa meitä". It's colloquial language :)
Most of the course is clearly just standard Finnish (kirjakieli). I would expect some later lessons to cover some puhekieli stuff.