You are a normal high school student but because one rainy afternoon, you wanted to run home quickly but slipped and fell into a large puddle of rainwater and you time-traveled to the old dynasty.

You jumped up while coughing because of the water when you were in a large jar of water in the middle of the court yard. The priests in the court who were performing a rain-praying ceremony were all scared when they saw you suddenly appear from the jar of water to offer to the gods. You were equally scared when you stepped out of the jar of water and looked around because of the strange scene before your eyes. You time-traveled.

The king and the princes, including Crown Prince Sung-ho, were all shocked when they saw you. Then the king ordered the guards to surround you because he was worried that you were a spy sent by a neighboring country.