Seon Woo receives calla every morning and wants to find out who the secret admirer is. One day, he goes to a nearby florist’s where he meets Ji Hee. He falls in love with her at first sight, thinking she is the one who is sending him flowers. Seon Woo asks Ji Hee to go on a date, and she agrees. He arrives at the rendezvous only to find that Ji Hee is held hostage and, to his horror, killed before his eyes.
Kariya Yuri is an airhead who falls head-over-heels in love with Aono Ryuhei after their very first meeting. Yuri's happiness knows no bounds when Aono surprisingly ends up agreeing to go out with her, and thus she starts to enjoy her perfect relationship with her perfect boyfriend. Alas, misfortune strikes when only two weeks into their relationship, Aono tragically dies in an accident. But is something as simple as death really enough to keep the two lovers apart?
Min Ho, a music producer who is struggling to write a new song because of the lack of inspiration. He is told by his manager that he has to find love so he would have emotions to write a new melody. He then meets a Chinese tourist named Ling Ling. Min Ho is inspired by Ling Ling but due to their language barrier he decides to adds her as a friend on the mobile messenger app LINE to communicate with one another.
Sung Hyun, who just moved into 'Il mare' receives a strange letter. The letter is from a young woman in the year 1999, two years from the present. Her predictions about the past are amazingly accurate. Her warning about a flurry of snow on a certain day in January of 1998 and the ensuing flu virus turns out to be true. Eun Joo is convinced that her letter has travelled back in time to December of 1997 and starts writing regularly to her newfound pen pal. A professional voice actor, Eun Joo asks Sung Hyun to find her long-lost cassette recorder at a train station. Sung Hyun goes to the train station and gets a glimpse of Eun Joo, who of course, has no idea who he is.
'Ditto' focuses on a female university student from 1979 who begins talking via HAM radio with another student from her school. They hope to meet, but through a series of misunderstandings, she begins to realize that the other student lives in the year 2000. This bit of the supernatural serves as the foundation for an exchange between these two, who are separated by 20 years during which their culture has been transformed.
Kenta, a young pianist who has just lost his job, is drowning his woes at a bar when he meets a man in a Hawaiian shirt named Yamaki. He invites Kenta to work with him, and the next thing he knows, Kenta wakes up to find himself in a room he has never been in before. It is a strange room that seems to have no connection to life. He descends a staircase to find many shelves of books. Yamaki appears once again and tells him that this is Heaven's Book Service, and Kenta is going to start working a short-term, part-time job here. In addition to selling books, this bookstore, owned by Yamaki, provides a service of reading aloud to customers. Although he is unsure of his new surroundings, Kenta follows their actions and starts to work in his new part-time job.
A single postbox stands alone in a wide field. It is postbox where many people who have lost their loved ones drop in letters for those in heaven. Ha Na is one of those people who comes again to mail a letter. She meets a young man called Jae Joon there. He tells Ha Na that he is the 'postman to heaven' and proposes that she help him with his work. His job is to convey letters and heal the hearts of the senders. As Ha Na spends time with him, her emotional scars are healed and the two of them seem attracted to each other. However, at that moment, Ha Na realises that Jae Joon has a big secret. Why is he working as a postman?
Xiao Jia, a university student, secretly admires her class monitor, Wen Tao. In a twist of an event, Xiao Jia accidentally gets hold of a radiophone. One day, as she daydreams of Wen Tao, the radiophone connects to Jia Hui and they start communicating through the radiophone. From their conversations, they discover that they are actually studying in the same school and plan to meet up, but both of them miss the date and finally find out that they exist in two different worlds.
"Please tell me who I really am." This e-mail message was sent by Mika Kimoto, an editor working at a publisher in Daiba, Tokyo. Coming from a wealthy family, Mika has always had everything she has ever wanted and more. She is a third-generation Korean living in Japan. She loves her job, and her Japanese boyfriend is a doctor. There's one thing that bothers Mika, though... Her father, Masao, is very conscious of his ethnic heritage and will allow Mika to marry only a Korean. When her relationship falls apart because of her father's interference, she just happens to post the above message on a mobile phone dating service. Ryosuke, a blue-collar warehouse worker at Shinagawa Pier, replies to Mika's message. Daiba and Shinagawa Pier are separated by Tokyo Bay. Mika is a career woman working at a major firm. Ryosuke lives a meager life doing manual labor at a warehouse. There seems to be nothing in common between the two. Still, destiny brings them together. One day Mika happens to find her late mother Yuri's diary. Written within is the tale of Yuri's concealed relationship with a Japanese man before she married Masao. Mika finds out about her mother's hidden past and her passion for the man she loved. Without knowing it, she is about to follow the same path as her mother.
The setting is in Yokohama. Hiroto Kanzaki works hard every day and night for the survival of a small ship repair factory (inherited from his father) as well as the survival of his mother and younger brother, who are suffering from health problems. Living such an underprivileged life, Hiroto has forgotten how to smile. Nao is the daughter of a popular jewelry shop owner. She attends a prestigious exclusive women's college and grew up cheerful and blessed with affluent love. From the moment Hiroto meets her, his closed mind slowly opens up to Nao, who is so innocent that she utters whatever she thinks.
It all started when Takashi, a talented composer who could not write a love song ever since his girlfriend Rina left him suddenly, accidentally sent an incomplete piece of his latest work to Amane via email. Deeply touched by his music, Amane wrote back to him, without getting a reply. Amane continued writing to him, pouring out her thoughts. Only when she signed as "Teru Teru Bozu", did Takashi responded with a mail saying "WHO ARE YOU?", because what Rina left him as a farewell gift was a teru teru bozu!
Woo Hyun is a Korean man and Haruka 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 from 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 smart phone from Haruka. They exchange messages without knowing each other’s faces, and are drawn to each other before they realise it.
