Deep inside the Divided Plain where the Valkyrie made a deep scar with her spear long ago, fierce and dangerous insectoid monstrosities appeared from beneath the surface and soon it became the most dangerous place in the region. Several grotesque holes were found where these bugs emerged, and a small platoon of brave warriors went to investigate, but none have ever returned. As time passed, people called this bottomless hole, an abaddon. Nobody can foresee what danger lies beneath this dangerous underground cave.