This is not a standalone adventure, this book adapts the adventure from the Forgotten Realms Campaign Guide to be legal for RPGA play and required the Forgotten Realms Campaign Guide to play.
From the front of the book:
A Dungeons & Dragons® Living Forgotten Realms Adapted Adventure
For many years, goblins have laired in a nearby dungeon hidden in the boughs of the Southwood. This dungeon is known to some as the Barrow of the Ogre King. Recently, the goblins have become bold enough to leave their dungeon home to raid the nearby town of Loudwater. It is up to your newly-formed band of adventurers to deal with the threat the goblins pose and discover why they’ve attacked the town. An adventure set in Loudwater for characters levels 1-2. This adventure is found in the Forgotten Realms Campaign Guide.