The second princess refers to the second sibling among three sisters. Being stuck in the middle, she's not adored by her dad nor loved by her mom. This is a cause to her weird personality where she tends to feel inferior to others and yet puts up a very tough and strong personality in front of others. Things start to change when she falls in love with a wealthy man, Ning Huan Yu. He is a rich man who is often pranked because of his innocence and obliviousness towards things.

The story is about a bright and innocent 27 years old guy with an IQ of 65. Because of his issues he is neglected by society and frowned upon, but he tries to be optimistic and not let it bother him. Seo Eun Hye, a fumbling swindler running from the cops and who only believes money can bring her happiness, and love will bring more sadness then it's worth. One day she meets this boy and hey completely changes her outlook on life.

The series takes place a few months after the 3rd installment.

Chan Siu Sang and Wai Ying Zi have been dating for a while and seem to be in a stable relationship. Everything seems to be looking up for Ying Zi now that she's in a stable relationship and finally got a promotion at work, but the only that she and Siu Sang seem to fight about is marriage. He wants to rush into marriage but she wants to put it off for a few years to focus on her career since it is flourishing. Their relationship is further complicated when Siu Sang becomes jealous of Ying Zi's new handsome co-worker Ken, Mad that Siu Sang does not trust her, the two decide to break up. Ying Zi soon starts dating Ken since the two grew close while working together and Siu Sang begins dating Sunnie who works at the forensic department after being pursued by her.

Having gone through so many tragedies in the past Chan Sam Yuen finally decides to focus on her family as top priority. She and Ching Fung have patched up their marriage even though it is still not perfect. With a difficult pregnancy Sum Yuen is no longer focus on her career. All seems well with her and Fung when she gives birth to a son until Fung gets entangled with female triad boss Chiang Tin Wing and her husband Sing Jin Choi. Fung is in charge of the case of Wing and her crime empire. While investigating Wing, she takes a liking to Fung and drugs him so she can have her ways with him. She uses their one night of passion to blackmail Fung into continuing their affair. Choi finds out about the affair between his wife and Fung, enraged with his wife's infidelity he accidentally kills her and frames Fung for her murder. With evidence to clear Fung of the crime Choi decides to kill Fung as revenge for ruining his marriage.

Here comes the story of a heart-warming and down-to-earth modern family! Duk Hwa, a former celebrity who married a hot wife who is 20 years younger than him. Keum Pyo, a first-born daughter in her second marriage after a failure of her first. Eun Pyo, a second daughter who's down-to-earth and born to love a man. Dong Pyo, a bigmouth phony-baloney living his restless youth. These outrageous members reveal their stories as their family feud unfolds.

Sui Tang Yanyi begins in the 580s with the conquest of the Chen dynasty (557-589) by the Sui dynasty under Emperor Wen, and concludes with the return of the Tang dynasty's Emperor Xuanzong to the capital Chang'an in 758 near the end of the An Lushan Rebellion (755-763).

The plot is made up of three main story lines.

The first, with Emperor Yang of Sui and his concubine Zhu Gui'er (朱貴兒) as the central characters, covers the events in the political arena and inner palace in the final years of the Sui dynasty.

The second story line narrates a turbulent period known as the transition from Sui to Tang, when heroes such as Qin Shubao,Shan Xiongxin (單雄信), Cheng Yaojin (程咬金) and Xu Maogong rise up to overthrow the Sui dynasty, followed by stories of how Li Shimin (the future Emperor Taizong of Tang) defeated his rivals and eventually solidified the Tang dynasty's sovereignty over China.

The last story line tells of the romance between Emperor Xuanzong of Tang and Consort Yang, and the events of the An Lushan Rebellion.

Romania, 2005. One of the last vampire families on earth decides to disguise themselves and live among humans until "the glory of their empire" revives. They are sent to different places all over the world that are considered safe by their leader.

However, a group of vampires takes the wrong ship and happens to come to Korea. On board, they run into a timid and unlucky man Doo-il. One of the vampires bites him by mistake and he becomes one of them. They promise Doo-il that they will return him into a human on the day when their leader comes to find them. He doesn't have any other choice but to live with them. They are disguised as a family of five and start new lives in Seoul. Can they really go back to their country safely when their leader comes to find them?

While watching the vampires who disguise themselves as a human family, the viewers will witness both their human sides and the humans' inhuman sides. Can Seoul be a safe place for them?