Bizarre happenings in the rural township of Flora in Northern Illinois attract the party, for whom such events are a beacon marking a Hellgate... this introductory adventure for Contagion 2e should get your players swept up into this alternate present in which portals to other dimensions pop up all over the place and it's up to brave folk like, well, them to deal with them.
The organisation is excellent, with an initial premise and loads of information on people, places and events to empower the game master to build his own story around them, interacting with the characters who can act as free agents exploring and investigating rather than being constrained by a linear plot line.
On the other hand, this isn't something you can pick up and play. You will need to decide what attracts the characters' attention in the first place, what is causing all these wierd events and how the matter can be dealt with... however, just reading through spawns a wealth of possibilities.
Character sheets for main NPCs are provided, but if you like the sound of this adventure but play a different ruleset that handles supernatural occurances, conversion ought not to be too hard.
There are no maps provided... but there IS a Flora, Il and the other places mentioned are there, even if the geography doesn't match the text precisely, so if you do like map-based adventures just hunt up some appropriate ones of the real places to use.
It's an elegant jumping-off point for some adventures that should prove entertaining.