01. Talk to Underworld Fernandez. He will ask you to find a hidden letter in the AMC.
02. Find the hidden letter in the AMC. Starting at the entrance on the bridge, it is the 2nd left, in a little section, with just the words Hidden Letter floating.
03. Take the envelope to Sailor Toad, an AP, on the beaches of BC. He will send you off to meet with Dr. Toad, an AP, on Northern HC.
04. Talk with Dr. Toad, he will spawn Aria, a HF, by the Sial Comm Tower, that you must kill.
05. Kill Aria, and return to Dr. Toad. He will send you back to Sailor Toad for further instructions.
06. Talk to Sailor Toad. He will send you to talk to Underworld Fernandez.
07. Talk to Underworld Fernandez, he will spawn Visgate, a red crosp, at the entrance to the AMC, that you must kill.
08. Kill Visgate, and return to Underworld Fernandez.
09. Talk to Underworld Fernandez. He will ask you to retrieve 20 Eyemba Eyes for Dr. Toad.
10. Kill 20 Eyembas, and return to Dr. Toad. He will send you to talk to Stontrile Shaman, a Stontrile, in the Solothic Caves.
11. Talk to Stontrile Shaman, he will spawn Darius's Dark Guard, a HM, that you must kill.
12. Talk to Stontrile Shaman, he will send you off to talk to Boon, an AP, in the BM.
13. Talk to Boon, he will send you back to Dr. Toad.
14. Talk to Dr. Toad, he will send you back to Underworld Fernandez.
15. Talk to Underworld Fernandez, and he will give you your reward.