Romantic comedy about a rich hi-so girl and a country guy.

Because it’s destiny or the mission for the nation that made this Isaan police officer and a misfortunate young miss become rivals by having to pretend to be lovers. Problem arises everyday, but their bond develops every minute. Therefore not only is this mission dangerous, but love is on the line too.

Yosuke Tomikawa (Tomokazu Miura) is married to Mizuki (Hitomi Kuroki). They have a daughter, Shiori (Atsuko Maeda), and son, Ko (Asuka Kudo). Yosuke works as the general manager in the personnel department at a large company. His wife works as a teacher at a private middle school. Their daughter works as a jewelry maker and their son is looking for a job. The family appears to look like a peaceful family, but, due to an accidental opportunity, the family begins to collapse.

Misa Chigasaki (Rin Takanashi) works for an app game company. She works hard to become the CEO of the company, but her love life doest not go well. Misa Chigasaki can't have a relationship with a man for more than 2 months.

Nearly twenty years ago, Park Joon Pil is the son of a mafia boss. The mafia boss is being chased by the police but takes a day off to take his young son to the department store. Kang Tae Pyung's dad, a police officer, takes his wife and young son to an outing at the store also. At the department store, Tae Pyung's dad attempts to arrest Joon Pil's dad. Joon Jil's dad grabs Tae Pyung's mom as a hostage and accidentally kills her.

Tae Pyung's dad goes crazy and runs after Joon Pil's dad, thinking that he has taken his son also. Tae Pyung's dad kills Joon Pil's dad but realizes too late that the little boy by Joon Pil's dad is not his son, but the criminal's. However, Kang Tae Pyung's dad is killed as well, and both the small boys become orphans.

A fellow police officer takes in Joon Pil as his own son, thinking that the little boy is Tae Pyung. Tae Pyung, however, is taken into an orphan home. Joon Pil knows he is a criminal's son. Twenty years later, Joon Pil is an aspiring young police officer and Tae Pyung is a boxing bum. When Tae Pyung's best friend becomes unfairly murdered, he vows to become a police officer. Two years later, Joon Pil and Tae Pyung finally meet again. Rivals but friends at heart, these two guys learn to forgive the past and embrace the future.

Sad Sonata is a love story about two men and one woman. The young Joon-young (Kwon Sang Woo), who was raised by his mother who sold liquor to American soldiers, met the blind Hae-in (Kim Hee Sun) and they became childhood sweethearts. Then, Hae-in immigrated to the U.S. following her aunt and her uncle (American soldier that married her aunt). There she met Gun-woo (Yeon Jung Hoon), who was Joon-young's best friend and son of a very rich man. After she received a letter from Hwa-jung saying that Joon-young is dead, she accepted Gun-woo's love. After an operation, Hae-in was able to see again. The story picks up again when composer Joon-young, singer Hae-In, and music producer Gun-woo all meet again.

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