Han Dong Soo is a livelihood lawyer. He randomly picks a prisoner to visit and picks up a case. He is usually rational and reasonable, but deep within his mind exists a dark side. Something triggers him to cross the line and step into the world of evil. His younger half-brother is Han Beom Jae. Han Beom Jae works at a second-hand computer shop and he also acts as a case broker for Han Dong-soo, bringing him clients. One day, Han Beom Jae notices that Han Dong Soo has changed since he brought him a case.
That case involves Seo Do Young who is the #2 ranked member of a crime organization. He is a former baseball player and appears nothing like a typical gangster. Behind his handsome looks, he hides a cruel and unpredictable madness.
Han Hae Na is a single high school teacher with a family secret. Due to an ancestor's fault, Han Hae Na's family has been cursed for generations. When someone of her family kisses anyone, they turn into a dog at midnight for six hours. Afterwards, they revert back to their normal appearance. This transformation repeats itself every night until that person, in their dog appearance, kisses the same person. Whenever Han Hae Na meets a man for a potential romantic relationship, she asks that person to not kiss her. This usually leads the men to leave her.
Drunk one night, Han Hae Na accidentally kisses Jin Seo Won, a teacher at the same high school, though they aren't even close as colleagues. Han Hae Na soon panics and persistently approaches Seo Won for a chance at another kiss. However, Jin Seo Won has a fear of dogs.
Kang Nam Soon has superhuman strength. She went missing as a kid in Mongolia. Now as an adult, she comes to Gangnam, Seoul, South Korea to find her parents. She finally meets her mother Hwang Geum Joo. Her mother is a wealthy woman and is a resident of Gangnam. After she lost her daughter, Hwang Geum Joo tried to find her daughter and she also tried to live a righteous life, obsessed with doing good deeds. Gil Joong Gan is Hwang Geum Joo's mother and Kang Nam Soon’s grandmother. The grandmother and mother were also born with superhuman like strength like Kang Nam Soon.
Somehow, Kang Nam Soon, her mother Hwang Geum Joo and her grandmother Gil Joong Gan get involved in a drug case that takes place in Gangnam. Detective Kang Hee Sik begins to work with the 3 women on the drug case. Detective Kang Hee Sik also becomes attracted to Kang Nam Soon.
What does a faceless mobile platform mogul, a drama production company CEO, an ex-gangster, a wannabe idol, an OBGYN doctor, an entertainment CEO, and a school art teacher have in common? These 7 individuals were all involved in the heated case of a missing girl. As they attempt to escape their fate and pursue the truth, they find themselves embroiled in secrets, lies, and desires in this retribution tale.
A CODA (child of deaf adult) student Eun Gyeol has hearing-impaired parents, but he has a gift for music. He is a model student by day and plays the guitar in a band at night. One day, he visits a mysterious musical instruments store and travels to a strange place. There, Eun Gyeol meets Yi Chan, Se Kyung and Cheong A. They form a band called "Watermelon Suga"r. Meanwhile, Yi Chan has a crush on Se Kyung, who is known as the "Cello Goddess" of Seowon Arts High School, and tries to win her heart.
Stuck together on patrol of Seoul’s Han River, the two officers are faced with emergency situations ranging from terrorism to everyday accidents and other incidents requiring emergency assistance, a premise that suggests all of the action, humor and offbeat crime-solving of the classic buddy cop genre.
Lee Hyo Shim is a skilled fitness trainer at her local gym, but, despite her top physical form, she’s bent under the weight of providing for her family. After her father walked out, it had been up to her to support her mother and three brothers. While this task might have been noble when she was younger, after years of thanklessly slaving for her family, she’s ready to finally live for herself.