This is one of the worst series > movie combination made.

Its fails as an epilogue because the series finale already had a concluded ending (if anyone would ask me). Yes, it was an open ending but for this series that worked (the full story was told, we didnt need more).

The movie doesnt add anything to the series, so watch the series and skip this shit. The movie also doesnt have a closed concluded ending so i dont understand why this movie was made in the first place.

series 7.5/10.
movie 4.5/10 as part of the series (but you should just skip it and be happy with the open ending of the series).
movie 3.0/10 as standalone.

(Even if you did watch the series) in this movie you wont have time to build up an emotional connection with the character and and their backgrounds like in the series, so you wont be able to love/hate the characters and you wont care about their fates.

The only way this could have worked if as a 6+ hour miniseries/eventseries epilogue, and then only if the characters would have envolved which they didnt.