The Tetra Galaxy is a region of space largely uncharted by the Galactic Federation. A sector of this galaxy called the Alimbic Cluster was colonized by a race known as the Alimbics, whose vast civilization has since been reduced to ruins.
Samus Aran was hired to investigate a repeating telepathic message originating from the Tetra Galaxy after it was intercepted and translated by the Galactic Federation. The Tetra Galaxy is outside of federation-controlled space, making her mission there especially dangerous.
- "---MISSION FILE 79109---
"The secret to ULTIMATE POWER lies in the ALIMBIC CLUSTER."
This repeating neural thread, originating from an uncharted region of the TETRA GALAXY known as the ALIMBIC CLUSTER, was recently intercepted and translated by federation empaths." —Introduction (Metroid Prime Hunters)
- "This area was once under Alimbic control. Ruins detected on various planets indicate a vast civilization." —Tetra Galaxy (Metroid Prime Hunters)
- "---POTENTIAL COMPLICATIONS---
This operation must remain covert. The TETRA GALAXY is outside of federation-controlled space, and the ALIMBIC CLUSTER is a wild and uncharted region.
While we have kept our communications classified, we know other entities have intercepted the thread.
The lure of ULTIMATE POWER will be irresistible to many. Disposition of rival interests is presumed hostile." —Introduction (Metroid Prime Hunters)