When the scholar Jeong Yak-jeon is exiled to Heuksando Island during the Catholic Persecution of 1801, he decides to write a fish-based encyclopaedia.

Min Do-hee
Bok-rye

Cha Soon-bae
Poong-heon

Kang Ki-young
Lee Gang-hoe

Ryu Seung-ryong
Jeong Yak-yong

Jo Woo-jin
Byeol Jang