One day Jun found a bottle between the rocks when he visited a beach with his family. Jun opened the bottle out of curiosity, which unexpectedly let blue smoke come out of the bottle, with Jin's figure standing in front of him. He said he is around 3,000 years old and feeling debted by Jun for freeing himself of the bottle. Since then, Uncle Jin, his nickname, has served Jun. Jun and Uncle Jin's exciting adventure begins.
