Hyunhaetan Marriage War is co-production between South Korea and Japan. Dae Cheon and Takako are lovers who decide to get married. However, Dae Cheon's father, who is a fishing boat captain, dislikes the Japanese while Takako's father has an unfavorable opinion of Korea. So Dae Cheon teaches Takako how to talk in a heavy, folksy Korean accent and tells her to limit what she says to his father to only four words. He then introduces Takako to his father under the name "Choi Do Ja", which is a girl's name in Korea. Thinking that Takako is Korean, his father approves of their marriage. But later on, Dae Cheon's father learns that Takako is Japanese and becomes infuriated.