Park Do-kyung (Eric Mun) is a sound director in his 30s. A year ago, his bride, Oh Hae-young (pretty) (Jeon Hye-bin), disappeared on their wedding day leaving him miserable. One year after that incident, Do-kyung was told that Hae-young is going to marry a young entrepreneur named Han Tae-jin (Lee Jae-yoon). Do-kyung exacted revenge by sabotaging Tae-jin's business leaving him bankrupt. However, the woman who has the name Oh Hae-young (just/"그냥") (Seo Hyun-jin) was actually just a stranger who coincidentally has the same name as the other Oh Hae-young (pretty) who left him.
Coincidentally, Oh Hae-young (just) is the girl that Do-kyung had been seeing lately in his visions, and he sees snapshots of the future with her in it.
Tae-jin was soon to be sent to jail due to bankruptcy, and hence before his imprisonment he meets his fiancée, Hae-young (just), and tells her that he doesn't love her enough to marry her and wants to call off their wedding. Truthfully, Tae-jin was lying and his true intentions was to let her go so that she will gain happiness.
Amidst all of this, Do-kyung and Hae-young (just)'s lives turn as they cross paths. After sharing similar unfortunate experiences of being dumped before their weddings, the two of them got even closer. Will Do-kyung start to fall in love with Hae-young (just)? But, will Hae-young (just) look at Do-kyung the same way when she finds out that he is the one who ruined her wedding? Is it a love story between two people who should not be destined to be together? Or will Do-kyung's visions of her actually prove that they are meant for each other?
A 36-year-old man, he is a sound director. He has a very reserved and aloof personality and is intimate and meticulous with his work. He is unable to forget his ex-girlfriend, Oh Hae-young (pretty), who disappeared on the day of their wedding. After he mistook Oh Hae-young (just) for Hae-young (pretty), Do-kyung keeps seeing visions that are always related to Hae-young (just) as if he sees the future. He falls in love with Hae-young (just) but knows he doesn't deserve her, because he was the one who ruined her wedding with her ex-fiancé, Han Tae-jin.
A 32-year-old woman, she is a product planning team representative of the catering division of her company. Her life got ruined after her ex-fiancé Tae-jin dumped her the day before their wedding, and as a result she becomes the main topic of gossip because of it. She describes herself as a pitiful and unlucky person but is cheered up by Do-kyung and eventually becomes attracted to him. Meanwhile, she is clueless that Do-kyung is the person who ruined her wedding. Because she shares her name with the beautiful and perfect Oh Hae-young (pretty), she is always compared and feels small.
A 32-year-old woman, she is the TF team leader of the catering division Oh Hae-young (just) works in. She also is Do-kyung's ex-lover who ditched their wedding and left for Europe. After one year, she still loves him and decided to come back to him. She comes from a wealthy family with many marriage issues, where her mother and father marry and divorce back-and-forth, and has many step-siblings. She always appears cheerful in front everyone in order to hide her true self who lacks love from her parents.
A 44-year-old woman, she is the catering division director and Do-kyung's older sister. She is an alcoholic who always babbles in French when she gets drunk and has a habit of falling for any man whom she ever sleeps with. Hae-young (just) and her other subordinates give her the nickname "Isadora" ("isa" = two four (24) and "dora" = "running around" meaning she is around at all times) because of her habit of constantly checking up on her subordinates.
A 36-year-old man, he is a lawyer and Do-kyung's friend. He is the first person who mistook Hae-Young (just) for Hae-young (pretty) and persuaded Do-kyung to seek revenge. He said to Do-kyung he would stay in Do-kyung's house for a while to protect himself from dangerous people that are related to the case he is handling. But in reality, he is hiding from the husband of a woman who recently seduced him.
A 33-year-old man, he is a sound recording studio staff and Do-kyung's younger brother. Even though they have the same last name, Do-kyung and Hoon are not actually blood-related - Do-kyung and Soo-kyung are from the maternal side, while Hoon is from the paternal side. He seems to be frustrated with his step-brother, and they don't get along with each other often and share different opinions. He always gets crazy while searching for a girlfriend.
A 63-year-old woman, she is a film producer and Do-kyung's mother. She is a gold-digger and only cares about living a luxurious life, and always asks Do-kyung for money even though she never pays him back. She was against Do-kyung's marriage to Hae-young (pretty) as she knew Do-kyung wouldn't give her money once he gets married. For this purpose, she emotionally and psychologically tortures Hae-young (pretty) into running away on the day of their wedding.
A 36-year-old man, he is an entrepreneur and Hae-young (just)'s ex-fiancé. He decides to call off their wedding and dumps Hae-young (just) in order to let her live happily. Not long after he dumped her, he went to jail because of the bankruptcy. He is curious as to why Do-kyung decided to destroy his business as they never met each other previously. Even after he walks out from jail, he still has feelings for his ex-fiancé, Hae-young (just).
A 60-year-old man, he is Hae-young (just)'s father. As a man he is talented in cooking, and he seems to be more patient and calm than Hae-young (just)'s mother.
A 57-year-old woman, she is Hae-young (just)'s mother. She feels pressured after her daughter called off her wedding, as her friends in the neighborhood keep talking about her daughter behind her back. She has a weird habit of taking off her clothes when she's angry.
She is a film producer and Hae-young (just)'s best friend. Thanks to her, Do-kyung and Hae-young (just) meet for the first time in person. She has been Hae-young (just)'s sole dependable friend since their high school days. Even though both of them are close, Hee-ran is popular with boys unlike Hae-young (just).
She is Hae-young (just)'s aunt. She used to help with house work often, but after Hae-young (just) called off her marriage, she became annoying and regularly argues with Deok-yi.
A 21-year-old woman, she is a part-time staff of a convenience store and Hoon's girlfriend, and seems to not want to get married during her lifetime. She tells Hoon during their 100th day anniversary that she wants the both of them to live together, but Hoon constantly rejects her idea because they are not a married couple.
A 74-year-old man, he is a conglomerate chairman and Hae-young (pretty)'s step-father, as Hae-young (pretty)'s mother was once married to him but eventually got divorced.
In the table above, the blue numbers represent the lowest published ratings and the red numbers represent the highest published ratings.
This series aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC, and EBS).
