Famous composer Duean Yi's newest project is to compose a love song. However, he struggles to write it; he's lost his passion. Inspiration strikes when he meets handsome barista Plengrak.

Li Xi Feng, who entered the palace seeking revenge for his father, was unexpectedly chosen to become a princess and sent to the Tujue to gather military intelligence. Li Xi Feng initially intended to use the power of Khan Ji Lie to avenge his father, but he discovered that Ji Lie’s reason for seeking the marriage alliance was because his elder brother had become a hostage in the Tang Dynasty, and marrying her was just a means to manipulate the Emperor of Tang Dynasty. Behind Ji Lie’s attempts to please her, he also intended to exploit her princess status to gather information, but he found out that Li Xi Feng was a fake princess. As the two individuals, harboring their respective grudges, went from concealing the truth to falling in love, they eventually found the happiness they desired.

Do Young lived and worked in a public bathhouse after leaving the orphanage. Yeo Ok, the head of Deo Group, finds favor in her eyes of Do Young, and with Yeo Ok's support, Do Young changes her name to Jenny Jang and gets to run a high-end fashion boutique. Also, she becomes a central and powerful figure in the political and business circles as she secretly solves problems for the upper classes. Jenny's ultimate goal is to become the queen of the Deo family using the international city development project. On the other hand, Yeo Ok plans to take advantage of Jenny and abandon her as soon as she succeeds in making Deo Group one of the top 10 corporates in Korea through the international city development project. To do so, Yeo Ok shouldn't make Jenny notice her scheme.

Lee Kwang Jae (Kim Ji Hoon) is the son of a rich family and he is immature. His father dies and leaves behind large debts. For his father’s honor, he struggles to pay off his debt. Meanwhile, Kim Young Ha (Kim Joo Hyun) is a young lady with her bright and positive personality who supports Lee Kwang Jae.

During the Edo period, 17-year-old Ochika built an emotional wall against others after a murder occurred in her family which runs an inn the post town of Kawasaki. Her fiance was killed by a man who was raised as if he were her own sibling. Ochika left her family home. She now stays at Mishimaya, the bag shop which her uncle, Ihei, opened in Edo’s Kanda Mishima-cho, and works silently every day. One day, Ihei summons Ochika to ‘Kokubyaku no Aida’ where he always welcomes his rival in the game of go. He instructs her to listen to the 100 odd horror tales from the people who come to visit, and then leaves. Ochika slowly begins to open her heart to their curious tales …

Lu Xiao Bai is a low-level gambler and fly-by-night who will do anything for a quick buck. One day, he agrees to help a local dignitary escape his hometown in exchange for money. But this proves to be a very fateful and foolish decision: The dignitary was trying to flee a marriage with Shen Jun Ye, the town’s overbearing constable and the daughter of a powerful family. Shen Jun Ye possesses incredible fighting abilities and enormous physical strength. She is also very aggressive and does not suffer fools lightly.

Shen Jun Ye chases Lu Xiao Bai down and, in order to appease her mother – who is distraught because of the failed marriage of her daughter – forces him to become the family’s servant for several months. He has no choice but to agree – although he tries (unsuccessfully) to escape time and again. But, when Lu Xiao Bai attempts to help Shen Jun Ye track down a wanted criminal, she realizes that while Lu Xiao Bai isn’t much of a fighter, he does have a powerful mind. The duo begins to start solving crimes together – but could they also develop feelings for one another as their partnership deepens?

A cicada was saved by a woman. He fell in love with her and transforms into human being, but he only has 7 days.

The continuation of Kao, Pete, Sun and Mork's story.

Kao and Pete being in a blissful romance, have grown closer. But with Kao being closeted from his mother, he fears the dreaded thought of her finding out. His mother then introduces Non, a son of a colleague, as he requires tutoring from Kao. With Non constantly giving off 'iffy' vibes towards Kao, it only fuels Pete's jealousy. Their relationship is put in strain, but through this, they must ultimately overcome each other's flaws. They both blossom in their youthfulness coated by their everlasting fondness for one another. Surrounded by the wonder of dark blue, Pete and Kao surrender to their feelings.

Sun starts taking hints from his unrequited love and slowly gives up on Kao. Through this Mork happened to possibly comfort him. Whilst Sun pushes Rain to stay away from Mork, the younger man's uncontrollable behaviour brings him in. As his wildness is intriguing, Sun's seriousness holds Mork down somewhat. Underneath it all, the two start to care for each other. However, with Mork's dangerous life, he can't shake who he is. But maybe he can for someone like Sun.