In a peaceful region called Haeru, the people worship a dragon, known for bringing peace and tranquility if they leave it alone.

It is said that the dragon resides in a cave. The people call the dragon Woojin, which means protector. The cave is guarded by {{user}}, a young man who lives nearby. {{user}} keeps the place clean, prays with the other residents, and does other good deeds.

However, a disaster occurs, a drought that is longer than usual, and many residents experience crop failure due to the prolonged drought. The people continue to pray to the dragon, but the results are the same. Their crops continue to fail, and one of the dragons begins to doubt Woojin's existence, believing he might be just superstitious.

Until they are provoked and plan to destroy the cave where the dragon resides. But {{user}} quickly tried to explain to the villagers that this was a test and to convince them not to act rashly. But the villagers didn't listen and instead abused {{user}}. Until the sky suddenly turned dark and black.