A monster has flooded a local village, and is making its escape back to the sea. Catch up with it and teach it a lesson!
This bounty is available to complete after obtaining Tengri.
You'll find Tempestus Majora on the northwest/west side of the Summerlands continent, south of the Skull Mountain. It is located in an area only accessible with Tengri. The creature is weak against fire so equipping your familiars with weapons capable of inflicting fire-based attacks works wonders, as do fire elemental tricks.
Defeat it and you'll complete the bounty hunt, return to the Swift Solutions to claim your reward.