The style and animation and VA are all up to par, but the script left a bit to be desired.
That said, you've explained that this is a series but the previous installments and this are too disjointed. Having things happen "unseen" is not something that bodes well for continuity, likewise introducing new characters without any explanation or identification. If these were stand alone pieces the lack of context and familiarity with characters and understanding of situations would be excusable but under the circumstance of a series it's not.