Han-gu was born to a Pilipino father and a Korean mother. His dream is to become a national Taekwondo athlete, and he's usually very bright and cheerful. His girlfriend Mi-su always encourages his dream. Maybe his dream was too fantastical; he always fails to make it to the final round, and it's not just because of his talent. However, Han-gu doesn't give up and doesn't show any sign of exhaustion. He challenges himself to become a national Taekwondo athlete for the sake of his family and his girlfriend. Can he become a national Taekwondo athlete?

Whenever elementary school teacher Kang Joon-soo falls in love, he always gives too much of himself to the relationship. Yet despite that, he ends up being the one getting dumped by his girlfriends. Joon-soo has been friends for 18 years with Kim Hyun-woo, a weather forecaster whose beauty belies her witty tongue and aggressive manner.

During the Japanese colonial era, roughly 400 Korean people, who were forced onto Battleship Island 'Hashima Island' to mine for coal, attempt to escape.