From the back of the book:
Welcome to the Griffoncrags!
The crew of The Scarlet Cavalier needs you now more than ever!
While on a short respite in the backwater fishing town of Gullport, you discover that your ship sunk while traveling through the normally serene Griffoncrag Pass. An urgent mystery awaits you! Make haste! Brave the waters of the Griffoncrags, defend yourselves from its denizens, and collect clues to discover the fate of The Scarlet Cavalier!
Rescue at Griffoncrag Pass is an adventure for a party of three to five characters of 1st level. During the course of the adventure, the characters advance to 5th level.