Agarta, the entity that consumes dragons, eliminates malevolent serpentine creatures from individuals' minds and corrupts their consciousness. To accomplish this task, she must first relinquish her own recollections. In return, she is rewarded with memories from distant eras. Her sole companion is a mechanical being known as 3-5-10, who supports her in her endeavors and maintains her vessel while also serving as a repository for preserving and organizing her memories.