: As you explore various islands, you uncover the history of the ancient kingdom of Arcadia . Long ago, a great "Catastrophe" destroyed the civilization. Oceanhorn was one of three "Living Fortresses" built by the engineer Archimedes to protect the land, but it eventually became a source of destruction.

: To defeat the beast, you must collect three ancient emblems—the Earth, Sun, and Ocean emblems—and master magic and combat.

: Your journey begins as you set sail across the Uncharted Seas to find your missing father. You soon learn that he left to face Oceanhorn , an ancient living fortress and sea monster that has terrorized the world for a thousand years.

In the original game, , the story follows a young boy (often referred to as "the Kid") who wakes up to find his father gone, leaving behind only a notebook and a mysterious necklace. Here is the "solid" summary of the narrative: