Adventure Guildsman Penny:
The mission I'll give you is to help the task at Hamak Underground Ruins on Talking Island.
But first, you need to learn how get there.
Go to Gatekeeper Elisa, the Gatekeeper of this town, and she will tell you how to go to the Hamak Underground Ruins. If you successfully arrive at the ruins, meet Giant's Minion Hadel and listen to him.