Bride from Vietnam (2007)

On the street of Ho Chi Minh, two people stand out in the crowd, Han-sook (Mi Sook Kim), and her sister-in-law, Gunja, who have come to Vietnam to find a kind, naive girl to marry Jun-woo. However, they can't find anyone they like, and as they are about to give up, they are approached by Jin-ju who asks them to take her instead. Han-sook likes the fact that Jin-ju's father is Korean, and decides to take Jin-ju as her daughter-in-law. However, Jin-ju, who is half-Korean half-Vietnamese, has decided to marry Jun-woo in order to find her birth father. A month later, Jin-ju, who pretends she's Korean who grew up in Guam, comes to Seoul and marries Jun-woo. Jin-ju meets Jun-woo for the first time on the day of their wedding and falls in love with him. On their wedding night, Jun-woo tells Jin-ju that he cannot love anyone. Jin-ju is heartbroken but begs him to stay with her for at least two years until she gets a green card. Jun-woo agrees to this "contract-style" marriage under one condition: that they do not fall in love with each other.