The Monsters provides a pretty good overview of all the mechanics in the new Vampire 5th edition in an easy to read and levied way. The story itself is a classic noir tale, solving a murder mystery through investigation, but with a good variety of action and drama along the way. As a free introduction, it actually holds a fair amount of story which should provide several sessions of play, and includes the requisite number of pregens.
With regards to the system changes, I have to say this is a much more streamlined and superior system than in previous editions. I like the Hunger mechanic that seems to cause much chagrin for other critics, largely because it seamlessly brings the vampiric condition to the general play of the game in a much more integrated way than before. Frankly, it was a fundamental aspect of the game often forgetten by some groups, who were just happy to play 'superheroes with fangs' well within their comfort zones. The other mechanics manage to incorporate diceless play and a number of other simple but effective ideas into an elegant and very playable whole. As such, the fifth edition of the game remains a faithful throwback to the earlier editions (1st and 2nd) without the baggage of nearly 30 years of supplementary development.
Regardless of how some established fans may react to change, this is a very good and well thought out product that serves to show new players what the game of Vampire: The Masquerade is all about. And it's totally free, so judge for yourselves!
[5 of 5 Stars!]