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...
On a spring day Munakata Ikujou visited an old temple to view a 1000 years old sakura tree. There Ikujou discovered a 3-year-old girl and adopted her as his own daughter. 16 years later, Sakurako has grown up to become a beautiful woman. Sakurako then has a fateful meeting with Takanashi Hiroto. Their pure love begin.