From the Module Description:
A terrible Evil has come to the forests of Wendels' Range. People have gone missing, innocent fey slaughtered and the very trees have been hacked and burnt for no apparent reason. Finally the Seelie court met to send out three groups of Champions to assemble information about the horrid occurrences, and you
were included in one of three missions. This final action has been prompted by the disappearance of The Oberon's eldest son, Caith and represents the last the fey can send off to defend themselves.
Now you have met, and the survivors of each of the groups have tales to tell and deeds to do. Of the Champions who left the Seelie Court, only the strongest have survived. It is up to you to find Prince Caith if he still lives and save Wendels' Range from the evil that has crept into it.
An Advanced Dungeons & Dragons 2nd Edition Module for Four to Six players of 7th Level Equivalents