Woo Hyun is a Korean man, and Haruka is a Japanese woman. They live different lives, but they both carry emotional scars from their first love. While looking for answers and hope, their fateful encounter will change their lives. It started with one message… Haruka, a stage actress in Seoul, has been in a slump ever since she broke up with her first love. She cannot forget him and keeps sending messages that go unread on LINE. Despite her emotional hurt, Haruka wants to believe in love. In Tokyo, Woo Hyun, an aspiring movie director, keeps on doing interviews concerning “love”. After being deeply hurt by his girlfriend, who thought about getting married, he no longer believes in love. Haruka and Woo Hyun have both grown timid of love. The two of them, who live apart in Tokyo and Seoul, have a chance encounter because of a LINE message delivered to Woo Hyun’s smartphone from Haruka. They exchange messages without knowing each other’s faces and are drawn to each other before they realise it
20-year old Deok Yi’s quiet small-town life gets exciting when a former University Professor, Hak Kyu, moves in, running from the scandal of a sexual harassment allegation. He works as a literature instructor at a culture center and she works at an old amusement park. Mutual attraction leads the pair into a lusty affair, but when the fall semester begins, Hak Kyu is reinstated at the university and returns to his family in Seoul, leaving Deok Yi behind. She refuses to let the relationship die, and a confrontation between them turns tragic when Hak Kyu’s wife commits suicide. 8 years later, Hak Kyu is a popular writer, but he is barely able to see, losing his eyesight to a disease, and he's estranged from his daughter Cheong, who blames him for her mother's death. At this time, he befriends Se-Jung, a new neighbor who moves in next door. He gladly accepts her help and Cheong becomes romantically attached to her, neither realizing she is in fact Deok Yi, the woman Hak Kyu betrayed 8 years ago, now on a quest to destroy them. Her plan sets off a vengeance-fuelled chain of events that ultimately sets the three bitter, angry and desperate schemers on a twisting collision course with each other.
A housewife becomes enraged with jealousy over her husband's affair. Meanwhile, their son sits in the periphery, observing their violent confrontations. One evening, the housewife takes a kitchen knife into their bedroom to exact revenge on the father. The father though is able to repel her attack and throws her out of the bedroom. The mother then goes into the son's room and from there it hovers the family into tragedy.
At her Marie Antoinette-themed birthday bash, Michelle loses her head after a few drinks and wakes up dishevelled in a hotel room. Forty days later, she discovers she’s pregnant and sets about finding the culprit. Michelle narrows it down to three suspects who turned up at her shindig: the figure-skating teenager. Jeb; the seafood-sauce tycoon. Tiger; and her Harvard-educated Chinese-American boss, Bill. Their confrontations provide ample opportunities for overdone slapstick and naughty sexual innuendo, but there’s also the matter of her incompatibility with any of them, poignantly addressing the harsh reality that she’s not exactly long-term relationship material in their eyes
Former acclaimed dancer Na Young Sae attempts to make a comeback. Young Sae then brings to Korea Jang Chae Rin, an ethnic Korean from China who he presumes is a highly talented dancer. To Young Sae's surprise, he soon learns Chae Rin is an inexperienced dancer and her older sister is the talented dancer. With only three months until the Dance Championship, Young Sae attempts to turn Chae Rin into a world-class dancer.
The story will focus on a love triangle between the three leads. Eikura plays the role of Morimoto Naoko, a girl from the countryside whose first love is her uncle, Ikezawa Masato. She follows after him to Tokyo by getting admitted into an elite medical university, but there she runs into Masato's girlfriend and colleague Aya, a beautiful and intelligent researcher who is the daughter of the university hospital's director. However, things get complicated after Naoko and Masato meet again.
An upper class Caucasian woman living in New York is unable to conceive a child with her Korean-American husband, who is sterile. After her husband attempts suicide, she contacts a young illegal immigrant from South Korea to pay him to have sex with her, so that she might get pregnant and save her marriage.
Mi Yeon is an independent career woman and a documentary producer who became a widow after her husband died in a car accident over nine years ago. Despite that, she dreamt of having her own family so with the help of a sperm donation she gave birth to a boy. After her son turned nine years old, he set off to go to China in search for his biological father. Mi Yeon also went after him, and together they met the boy's father, Zhou Li Yan. The three of them go through some unexpected situations and become a family.
After losing both her parents, Failan emigrates to Korea to seek her only remaining relatives. Once she reaches Korea, she finds out that her relatives have moved to Canada well over a year ago. Desperate to stay and make a living in Korea, Failan is forced to have an arranged marriage through a match-making agency. Kang Jae is an old and outdated gangster who has no respect from his peers. Short on money, Kang Jae decides to take on the arranged marriage. Having nothing more than a picture of Kang Jae, Failan spends her days dreaming and wishing that Kang Jae would come to visit her. Failan often writes to Kang Jae in sorrow about how much she misses and thinks about him, but never has the nerve to give the letters to Kang Jae. Things take a turn when Kang Jae is asked by his boss to take the fall for a murder in exchange for some money. The only hope in his worthless life is the wife he never met.
