The pursuit of Tanalorr unfolded as a mission in 9 BBY. Cal Kestis, a Jedi Knight belonging to the Stinger Mantis crew and siding with the Hidden Path, embarked on this endeavor. He was joined, and subsequently opposed, by Dagan Gera, a fallen Jedi from the High Republic Era commanding his Bedlam Raider forces, all aiming to reach the concealed planet of Tanalorr, nestled within the Koboh Abyss. Their efforts were thwarted by the Galactic Empire, secretly in league with Bode Akuna, a Jedi who had turned against them, desiring Tanalorr exclusively for himself and his family.
Kestis's journey began with the rediscovery of Tanalorr through a vision, triggered by employing Psychometry on a High Republic Era droid, ZN-A4, known as "Zee." This occurred beneath Pyloon's Saloon on the planet Koboh. The vision revealed Santari Khri, a High Republic Jedi Knight, in conversation with Zee about the Koboh Abyss and Tanalorr. ZN-A4's guidance led to the unearthing of Gera, who was in stasis inside a bacta tank within Koboh's Forest Array. Upon his release, Gera succumbed to the dark side of the Force and aligned himself with the Bedlam Raiders, driven by the ambition to seize Tanalorr for his own purposes.