Hopkins has lost his heat sword and you will need to journey through forest level 1 and 2 and defeat the Dragon to retrieve the Heat Sword.

Follow the red dashed line for the shortest route. If doing this quest for experience, go to every room and defeat all the monsters.

Upon retrieving the Heat Sword from the Dragon's mouth, return to pioneer 2 and speak to Hopkins. It will say that the quest is completed. Collect your reward from the Guild Counter.