On October 26, 1597, Yi Sun-Sin, a renowned Korean admiral (played by Choi Min-Sik) went through a naval battle with Toyotomi Hideyoshi in Myeongnyang Strait in order to prevent the Japanese navy from advancing to the north via the sea. As a result, he led 12 ships remaining in his command to a heroic victory against an invading Japanese fleet numbering over 300 vessels....

Min Gi-heon (Gong Yoo) is an ex-agent of the intelligence agency, and Seo Bok (Park Bo-gum) is the first human clone created through stem cell cloning and genetic engineering. He possesses the secret for eternal life. They get entangled in dangerous situations as several forces want to take control of Seo Bok....

The much beloved <Reply> series is back with a completely new cast and a new time period. This time, the story will focus on the topic of family and neighbors instead of first loves and relationships. <Reply 1988> will be a family drama set in the backdrop of 1988. It will focus on the variety of families of the year with an alleyway as the setting. Sung Dong-Il and Lee Il-Hwa will reprise their roles as the parents. Girl’s Day Hyeri, Park Bo-Gum, Ryu Hye-Young, Ryu Jun-Yeol, Ahn Jae-Hong, Lee Dong-Hwi, and Choi Sung-Won will join the new cast as the main characters....

Lee Yoon (played by Park Bo Gum) is the eldest son of the 23rd emperor of Korea. He’s indifferent and picky. He’s been dealing with national affairs on behalf of his sick father since 19 years old. Hong Le Yun (played by Kim You Jung) was dressed and raised as a boy since her childhood. At her age of eight, she was separated from her mother. When she grows up, she earns money by writing love letters and analyzing love strategies for others. Lee Yoon goes out of the imperial palace to meet the man who wrote love letters to his sister, but the one he meets is “Hong San Kook” disguised by Hong Le Yun. They know one another because of the misunderstanding. Hong San Kook is sold to the imperial palace to be a eunuch unexpectedly and she knows Lee Yoon is the crown prince. Lee Yoon tries his utmost to torture Eunuch Hong but he finds he’s getting to love the man more....

Cha Su-hyun (Song Hye-kyo) is a CEO of a hotel who has never lived her life according to her own choices, while Kim Jin-hyeok (Park Bo-gum), who has a free and bright soul, lives a happy and cherished ordinary life. They begin a touching romantic story after an accidental encounter....