In order to release her father's seal, San Sheng, the daughter of the Dragon King, goes back 500 years to search for the Dragon Master, intending to change her father's sealed fate by killing him.
Ducheon, a native of Yangsan, meets an Eo-sa in Hanbu, thanking her for taking care of her mother's heir, and asking for help. An Eo-sa, who told Du-cheon that it could be dangerous, is suddenly shot and killed by an arrow from a monster. Doocheon, who thinks that there must be something a teacher is looking for, returns to the scene of the incident and picks up a sword.
