Firstly, I enjoyed watching this film. It's a good introduction to the standard Baha'i history through the medium of film, and anyone who wants a quick entrance into that history should enjoy it - typically Baha'is, people enquiring about the Baha'i Faith, or those learning about it for other reasons, such as religious studies. Films bring things to life in an enjoyable way. If you're going to watch it in the expectation it will be a major film with Charlton Heston playing then of course you'll only be disappointed, but if you go into its viewing to enjoy seeing something in film about the Baha'i history, you will enjoy it and it will have been time well spent. In particular its format mixes re-enactment with narrative conversation/expression, but it's not one that provides debates and maybes, which I would myself have enjoyed seeing, it presents a pre-packaged story, so-to-speak; but every production has its style.
It's not though a substitute for a deeper reading of the history from a wide range of accounts, which should always be carried out, and it does contain some 'wonders' that likely never happened, but they are only a minor element.
Note that contrary to various comments, it is an individual initiative, not a production etc of the House of Justice, who in my experience provide in their productions a very high-quality experience combined with (in distinction from this) a free download.
