Three aircraft landed on the courtyard next to the Crystal Castle. Teranier, Eizenger, and White Paladin formed a collaborative party. The Sealing Gate to the Crystal Dungeon was about ten meters below the castle, lying in the middle of the mountain. The coldness passed from the outside to the inside. A group of ten players went down into the old basement. But this huge underground crystal door had recently appeared.
The first time Tan and his allies owned Crystal Castle Eizenger, they had been wondering about the empty room below. However, the question of why it was merely an empty hall and what it was for went unanswered. There were only strange blue candlesticks in the four corners of the room. The blue flame that flickered without heat was never extinguished.