A mysterious spire shrouded in purple mist has been seen in the jungles of Ukulam, a continent spanning nature preserve on the planet Castrovel. These sightings are periodic but persistent, yet scientists, explorers, and tourists have all been unable to reach the site or pinpoint its exact location. Intrigued by reports of the vanishing spire, Venture-Captain Arvin has secured permission to dispatch a team of Starfinders to Ukulam to locate and explore the mysterious structure.