Zefyr A Thiefs Melody invites the gamer to try on the role of a young thief, learning the basics of mastery in the Guild, which is located on a vast archipelago. The central task includes investigating a series of mysterious disappearances of people, provoking skirmishes with sea robbers, where you have to decide: to act stealthily or engage in open combat. The main character travels across the sea on a companion turtle to reach various locations, each of which is completely open for detailed study and conquering the highest peaks, offering further challenges.