Yaeko Kogure is a 27-year-old OL. She informs her company that she will resign to get married. Her fiance then informs her that he is in love with another woman and he breaks off their engagement. Yaeko Kogure now doesn't have a job or a boyfriend. While crying, she hears "Air on the G String" playing live in a shopping mall. The song inspires her to enroll in a violin class for adults. There, she meets university student Rihito Kase and housewife Yukie Kitagawa. Yaeko Kogure becomes attracted to Rihito Kase.

“We were together for too short and separated for too long.” Eun Ho is an A-list South Korean actor, and for 20 years, he is searching for his first love, Eun Dong. They were teenagers when they first met, and after a brief friendship, she disappeared. Ten years later, they miraculously run into each other and start dating, but one day, Eun Dong doesn't return to meet Eun Ho as planned. Another ten years pass, and when Eun Ho is a famous star, he decides to publish a book about his love story to find Eun Dong. Meanwhile, Eun Dong becomes a writer and is living with a new name ever since she lost her memories due to the tragic accident that kept her from returning to Eun Ho. Through a mutual friend, she is hired to ghostwrite Eun Ho's book! During the process, she begins to uncover secrets that unravel the life she knows.

Sakuraba Haruma's childhood friend Inukai Shuji was a cut above him in every way imaginable, living out the glamorous life bestowed upon him. Haruma, an unassuming salaryman, has lived his every day clutching onto his inferiority complex, existing only in Shuji's shadow. One day, Haruma coincidentally meets Shuji's wife, Inukai Reika, who Haruma has always secretly admired since his high school days. With feelings of envy, jealousy, and more, a "secret" is born from Haruma's repetitive days.

This work is a human drama that attorney, Taku Kurokawa challenges reversal play with weapons, passion, and science as a weapon to cause "miracle" to clear false charges. Kurokawa who plays Sakaguchi actively opposes fake crime defense, which is said to be impossible, reproduces the events that occurred on the scene in an experiment and tries to elucidate the incident. In addition, Naoki Fujiki appears as a new American lawyer, Kazuaki Wakakura who is swayed by the pioneer, Haruna Kawaguchi , a scientist who lends power to Taku, Kyoichiro Akiro .

Sin-goo is the owner of a car bar near Daehak-ro. His 40 years of life exist without sex because he is always so busy, but he lives on a joy of making money. Joon-seung is a 20 year-old guy who recently got together with his birth mom; even though he was hard to say ‘Mom’ to her mother, he really wants to help her out by making some money. Joon-seung happened to work for Sin-goo as kitchen porter. Joon-Seung fell for Sin-goo who he felt he was like a thoughtful brother, and Sin-goo also fell for Joon-seung. One day, they spend the night together due to Sin-goo’s heavy drinking; Sin-goo also has relationship with his alumna, Seong-ja. He blames everything on an alcohol. But later on, the relationship between Sin-goo and Joon-seung gets more and more serious. On the other hand, Seong-ja thinks Sin-goo as her real lover, while Sin-goo is dazed by the fact that Seong-ja and Joon-seung are mother and son. Pretty middle aged guy Sin-goo gets blind love from both Seong-ja and Joon-Seung. Will his confused sexuality and loves of his lifetime end happily?

Meng Chu Xia is a kind-hearted and optimistic single 28-year-old ‘shengnu’ (‘leftover woman’) who takes care of the son of her long lost sister. Shen An is a businessman who has returned to China from overseas to start a new company. When Shen An and Chu Xia meet, they are both not expecting to find love. Shen An is engaged to be married and Chu Xia is struggling to raise her teenage nephew.

Nakrop Payakracha, the young president of Tiger King corporation, is a cruel man who cares for no one but himself. He lacks a heart and excels in business. One day, Eau, a security guard at Tiger King, becomes disabled from an injury incurred while doing his duty. Nakrop fires him because he has no tolerance for weaklings. Eau becomes despondent worrying about the family he has to raise, his mother, his sister Ounjai and his little son Ou. So, he decides to kill himself by standing in front of Nakrop’s car during a race, forcing Nakrop to unintentionally hit Eau. Eau dies while Nakrop sustains a serious head injury and goes into a coma. When he wakes, he has some memory loss and his personality is completely changed. He is no longer cruel, no longer greedy, no longer ambitions. He turns into a laid-back guy, goodhearted, and considerate of others. He does not care for the company or remembers how to operate it. This terrifies his mother, Khun Ying Nayika , who raised him to be fierce like a tiger. She demands that Nakrop behave the way he used to and order's his assistant, Thong Tiew, to change him to how he was before. She claims “My child is a tiger! Not a dog who will move aside to let anyone pass by.” As Nakrop resists his mother's influence and evolves into a better person, Ounjai comes after him to avenge her brother’s death. She is helped by the new president of Phoenix Corporation, Tiger King’s rival company. Things don’t go as planned because Nakrop is a different person now, and he vows to make amends for the loss suffered by Ounjai and her family.

As a flower girl, Su Xiao Wan never really imagined her simple life would ever be anything other than ordinary. But when an accidental mixup lands her in a sibling contract with Gu Yan Xi, the young master of the well-known Gu family, her simple life is flipped upside down. Now obligated to play the part of Gu Yan Xi’s younger sister, Xiao Wan finds herself tangled in the affairs of one of the most prominent business families in the land.

Constantly hounded by Yang Xi’s sharp tongue and ceaseless schemes, Xiao Wan is forced to rely on her quick wit and sly tricks, in order to survive. Never allowed a moment’s peace, Xiao Wan can only find respite while in the company of Gu Zi Qian, the family’s second master. A warm and caring young man, Zi Qian takes it upon himself to look after Xiao Wan, shielding her, whenever possible, from the constant pestering of his older brother. Unfortunately for Xiao Wan, Zi Qian’s kindness is fueled by his own secret ambitions.

Soon trapped in a complicated relationship with both Yang Xi and Zi Qian, Xiao Wan struggles to find a way out. As her head tells her to go one way, her heart tells her to go another; leaving Xiao Wan to wonder, which brother will ultimately help her find the happiness she desires?