Aria is a novice thief who has just made her debut in the guild. Although she is confident in her speed, sabotaging traps, fighting, and so on, she still has a lot to learn.

One day, she gets drunk and destroys the store, so she has to compensate. Then, she hears rumors of a dungeon where legendary treasures lie. However, it seems that no one is able to claim them yet.

Motivated, Aria heads to the dungeon. Attacking the females, planting them their seeds, full of monsters, an ero trap dungeon.