Nya and L'Ni have rejoined the Iludrin after finding another Starfire world. While visiting Ethal to coordinate on the military preparations against the Issan, Nik and Ann learned about a world rumored to possess a treasure of the angels. Although Nya is certain it's not a Starfire world, she decides to create a portal for a quick investigation.

What they find is far from a treasure, and the rumor has attracted Paxons, who insist on joining the investigation, because the secret is guarded by puzzles that only the Inari can solve. What they discover is a tomb with a mysterious phantom taunting those who dare enter. When it drives everyone into insanity, escape becomes a fight for their lives.