@optimumsquare, I didn't realize that you wanted your character to join in this excursion, but it's not too late. Our basic setup so far is that timplausible's character, Leif, has come to the cobalt isle looking into some sort of trouble with wyverns. He and/or his family has a special connection to them and he has reason to believe that the key to whatever is happening to them is here.
Leif met my character, Bastien, on the way out here. Bastien has been having a recurring dream in which someone or something out in the wilderness has been trying to get him to come out here. He is a mage whose magic is related to working with animals so his summons could potentially be related to the quest that Leif is on.
Vargus' character, Old Kurgen, is a local who has signed on as a guide, essentially. Someone who knows a little something about the area who, for whatever reason, has taken it upon himself to make sure that Leif and Bastien don't get in over their heads out in the wilderness.
Let's find a hook to tie your character in. Ideas?