Slay Threshadons in Loch Modan and return to Warg Deepwater in Loch Modan.
Something's wrong with the threshadons, Hero. They're out from hiding and are eating all the fish of the lake! They've been harming our business for a while now, and soon there may be nothing left. They are beautiful creatures... We've shared the lake for generations, so it pains me that we must take such extreme actions against them. I've come to accept that we must cull their numbers so we can keep our livelihoods. It's only expected of me to ask an outsider to do what we cannot and are not willing to do.
Are you done already, Hero?
You're saying they were smaller in size? That'd explain their hunger. However, what would make them leave their nest so early and why all of them? <Warg ponders the thought for a while and turns back to you.> Here's the payment as promised. I will investigate further.
!?