Yiu Hok Sum is detective who is skilled in reading human body language, especially of people who try to deceive him. With his knowledge of criminal psychology, he is able to solve cases by paying close attention to the behavior and reactions of witnesses, with the help of his team. However, his relationship with his stepfather's side of the family is strained since his mother is looked down upon as a gold-digger, who married shortly after her Yiu Hok Sum, as a young child, witnessed the death of his father.

The story centers on an extended family and the dramas caused by love. Cousins Ki-woong and Suk-hyun seek the affections of Hae-in. Ki-woong is Hae-in's college senior and close friend. Suk-hyun and Hae-in have known each other since childhood. The love triangle and rivalry deepen. Ki-woong's parents keep a sound and happy household despite certain setbacks. Ki-woong is arrogant but a softy deep down. Ki-woongg's uncle is an idealist who still clings to the notion of romance. Ki-woong's shrewd aunt values money above all else. Their son Suk-hyun well educated and having lived abroad for most of his life has difficulty relating with his parents. He considers Hae-in and Jongnam in search of a bride. Hae-in and Suk-hyun's parents are close friends. Hae-in is a bright career woman and works for the same company as Suk-hyun. Everyone believes she is quite a catch but she is independent in search for love. The unfortunate Jong-nam lives with Ki-woong's paternal aunt. Jong-nam had been in love with her son until he died in a tragic accident which bonded the two women. Jong-nam and Suk-hyun bump into each other one day and find they are mysteriously drawn to each other.

Takeuchi Miharu (Maya Miki) is a capable lawyer with a law firm in Nagoya who gets to handle a divorce case assigned by their head Mizuno Toyohiko (Tachi Hiroshi). Gohara Naoki (Yoshizawa Hisashi), the president of the company, wants to divorce his wife Nobue (Kone Hana) who left their 5-year-old son behind and moved out. Nobue does not want to give up her child. The case seems to complicate Miharu because she had experienced divorce too and was deprived of custody of her daughter Kanae, who she has not seen in 10 years. She hesitantly starts working on the case but gradually gets absorbed in it.

While she is the husband’s attorney, the solution she offers reflects Nobue’s feelings. This offends the client company and the law firm’s advisory contract is terminated. She resigned.

Nobue arrives with the twin sisters. She believes they can count on Miharu who identified with her own divorce issues. Miharu does all in her power to try to pull the twins’ broken family together. She got convinced to start a divorce counselling centre. On the day of the opening of ‘Takeuchi Harumi Divorce Counselling Centre’, a young lady stares at the signboard of the centre with a surly expression. She is Miharu’s daughter, Kanae (Taketomi Seika), who is now an adult.

In the Ningyo-cho area of Nihonbashi, Tokyo - a woman was murdered. Detective Kaga Kyoichiro, who just transferred to the Nihonbashi police precinct, is placed in charge of the murder case. With virtually the entire residents of Ningyo-cho's shopping street emerging as suspects, Detective Kaga must use his keen sense of deductive reasoning to uncover the truth.

Hong Kyung-Tak (Cha Seung-Won), a good-hearted citizen with high morals, returns from the army and gets hired as the body guard for KBB Security Company. Han Sung-Soo (Song Yil-Gook) is the president of KBB Security. When Sung-Soo attempts to bring down a politician through bribery, Kyung-Tak quits his job and joins another security company led by his friend. Park Yoo-Jin (Han Go-Eun) is a female bodyguard who works at KBB. A love triangle forms when she begins developing feelings for Kyung-Tak, while at the same time, Sung-Soo has feelings for her. When Yoo-Jin learns of Sung-Soo’s corrupt dealings, she decides not to give him a chance to be with her. The love triangle worsens when Kyung-Tak’s sister’s friend, Na Young (Yim Eun-Kyung), moves into the neighborhood and begins liking Kyung-Tak. Unfortunately for Na Young, Kyung-Tak only sees her as a little sister.

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When Ryoji finds out that the object of his father's perversion is his first love, Yukiho, he kills him. To his horror, Yukiho's mother forced her to do so to relieve their dire economic straits. Yukiho also retaliates in similar manner by staging a suicide for her mother as well as herself. It's been 14 years since then and the boy that gave up everything and the girl that waged her life on the boy are struggling to continue to love each other. They grow up attempting to keep it secret and ride out the statute of limitations. In order to protect Yukiho, and improve her life, Ryoji enters the world of vice and dabbles in crimes to support her.

The story of handsome lifeguard Bao Yu and Meng Mei, owner of the Hero dog called Xiao Qi, who befriends and unites together to help small dogs.