Lee Roo-Da tries to reform her tyrannical boss Baek Jin-Sang to become a new and better man. Because the boss has such a terrible personality, all of his subordinates including Roo-Da despise him. One day, Roo-Da is so mad at him that she hopes he dies already. When he gets hit by a truck and dies, she blames herself and wishes that it would all be a dream. The next morning, she wakes up and learns that she has been caught up in a time rift, and her battle to bring her boss back to life begins.
Lee Jae-Sang is a lawyer at JK Law Firm, which is one of the biggest law firms in South Korea. He is an excellent lawyer, but he only cares about winning for his benefit. One day, he has a mysterious car accident and he is drawn into a parallel world. There, Lee Jae-Sang finds himself working as a prosecutor. He is strict in carrying out the law. He is married to Ra Shi-On, who loves Lee Jae-Sang and is faithful to him. In the world where Lee Jae-Sang came from, he broke up with Ra Shi-On ten years earlier and Ra Shi-On works as a detective. Lee Jae-Sang struggles to cope with his different selves.
Story about an unexpected plane crash that causes a widespread panic in South Korea due to the disappearance of nine people, including some influential figures in the entertainment industry. Seo Joon O used to be a popular singer, but he isn't popular anymore. Now, he works as a reporter for a TV entertainment show. He and his stylist Ra Bong-Hee land on a deserted island.
Life, death and second chances take center stage in this story about three people whose intertwined destinies travel through space and time with haunting results. It’s the 1980s and Detective Cha Hyung Bin has devoted his life to criminal justice, and his heart to Ha Eun, a bookshop owner suffering from heart disease who keeps her illness a secret. But Cha Hyung Bin isn’t the only one pining after Ha Eun: serial killer Gong Ji Chul has also fallen in love with her. Their lives collide with tragic results, but 30 years later, they’re reincarnated and fate brings them together again. The more time passes, the more their new lives become tangled in the devastating web of history. Will they manage to escape the past, or be forced to come face to face with it?
Kang Yeo-joo is a best-selling writer. She only writes crime stories, dealing with cruel murder cases. She constantly thinks about how to murder people for her novels. Kang Yeo-Joo is married to Han Woo-sung. He is a lawyer, specializing in divorce. He wrote a memo to his wife stating "If I cheat, I die."
Song Geurim is a radio program writer who isn't exactly talented in writing. She's got the passion, initiative, and drive, but due to her lack of writing skills, she still remains an assistant writer. When she was young, the radio was the only thing in the world that she could share with her blind mother. She was consoled by the sounds of the radio and loved it more than anything, so she became a writer. When her radio program is on the verge of cancellation, she succeeds in casting a top actor Ji Suho, who can't do anything without a script.
The story of people driven by greed. Kang Pil-Joo grew up at an orphanage, but he now works as a managing director of a legal team at a corporation. He is acknowledged for his intelligence and his exemplary job performance. Some of those that work around him are jealous of him. Na Mo-Hyun is an environmental activist and a science teacher at a middle school. She is a good listener and laughs a lot. She dreams of a love driven by fate.
Ji-Sook goes through a difficult period, due to her father's private loan. She begins living as Eun-Ha. Eun-Ha is from a wealthy family and looks like Ji-Sook. When Min-Woo was only seven years old, he became the successor of a large corporation which his family ran. Due to his position, he cannot reveal his feelings. Through his family, he meets Eun-Ha. He notices she is different from other wealthy woman that he has met. Min-Woo has feelings for her.
A divorcee with cancer and a penniless single father meet and heal their wounds with the help of each other.
Do Yeon-Hee (Choi Jung-Yoon) is the only daughter-in-law of a family, who runs the Rara Group. She has a perfect life, but her husband cheats on her. Due to the other woman, Do Yeon-Hee’s life changes completely.
Han Jae-Kyeong (Ahn Jae-Mo) used to be a professional golfer. To let his wife achieve her dream and support her while she studies abroad, he quit playing golf and became a golfing instructor at a practice facility. He raises his son by himself, while his wife is away. When his wife returns to South Korea, she asks him for a divorce.
Woo Tae Suk is an experienced and well-established detective with a long professional career, but in spite of everything he is a lonely and bitter human being. It all has to do with him only focusing on solving cases, while his actions are completely controversial because it crosses the line between good and evil. Woo Tae Suk crosses paths with a psychopath, but he cannot arrest her because of lack of evidence. The woman eventually decides to help Woo Tae Suk solve other cases.
After his uncle's unjust takeover of the family company, Kang Min Ho grows up to be a successful, if not cynical investor who only cares about money. But when he undergoes a sudden heart transplant surgery, Min Ho literally has a change of heart when he inherits a warm and compassionate heart. In the midst of seeing the world anew, including falling for the kind Kim Soon Jung, Min Ho must mitigate his newfound personality with the demands of his cutthroat career.