This adventure for 1st-2nd level characters opens with the standard overview of the history of the land (in case you've picked up the adventure without looking at any other Odysseys and Overlords material) and then gives a brief note about the background to the adventure. It's designed to toss the party straight into the action when they are in some wild country called the Untamed Gauntlet.
Interestingly, the party has not been sent to the Spire, a known but mysterious landmark in the Untamed Gauntlet - the intention is that they are going elsewhere when they notice activity there and presumably decide to investigate. In case they don't, there's a kobold hunting party wandering around that might decide to have a go at them. From there it's into the Spire proper and a room-to-room description follows.
Two maps are provided, one for the GM and one for the players. They are nice and clear, but the only difference between them appears to be the room numbers (which the players don't get). The room descriptions are good, providing details of what's there along with stat blocks for who/whatever is in there - complete with checkboxes to mark off their hit points as they die, a neat addition - and relevant mechanics for any traps.
There's enough going on in this small space, with several of the kobolds potentially willing to interact rather than just fight to the death (although they mostly will, if not running away, should the party not be inclined to conversation. Overall, it's a nice introductory adventure that brings out the essence of the 'OSR' style of play.