The story is set in the Qing dynasty during the reign of Emperor Yong Zheng. Yong Zheng's harsh and brutal policies lead to widespread discontent and dissension. Meanwhile, a secret death squad, named after their dreaded weapon — the flying guillotine — goes around slaying the emperor's enemies. The young crown prince, Hong Li, disguises himself as a commoner and embarks on an inspection tour to Jiangnan. There, the prince evades assassination attempts orchestrated by nobles plotting to seize the throne, and uncovers a shocking truth about his birth and origin. Besides, he also meets and befriends two maidens, Lu Si Niang and Yu Niang.

"The destination of the Qingzang road is Lhasa in Chinese Tibet. The Qingzang road runs for 1,937 kilometers at an average altitude of 4,200 meters. Starting out from Xining, an interesting mixture of Tibetan, Islamic, and Han cultures, the camera crew passes through the beautiful town of Golmud, dubbed the "Pearl in the Gobi," Namucuo Lake, which means the "Heavenly Lake," the Kunlun Mountains, where snow falls even in summer, and other stunning places, before finally arriving in Lhasa. Viewers will see the myriad faces of this huge expanse of nature, including scenes of areas where reporting by foreigners had not been permitted. This magnificent travel documentary also shows the lives of Chinese people struggling to survive in this harsh environment and even those of soldiers stationed at the highest military post in the world."

"Together, four people from the year 3000 and a man from our time write a new chapter in history...." ―Opening narration[src] In the 30th century, time travel becomes illegal after a time paradox crisis. The Time Protection Department is established to watch for and stop time crimes. Four new enlistee cadets of the TPD are tricked by Don Dolnero and his gang into letting them time-travel to the 20th century to commit various crimes. To protect history, the four cadets pursue them. There they encounter a severe problem: the Timeranger program requires five members for the first operation. They thus force a present-day martial artist, Tatsuya Asami, to join them, allowing them to become the Timerangers. Afterwards Tatsuya rents a building for them to live in and they start a small odd jobs business called Tomorrow Research to financially support themselves. Over time, the four cadets begin to realize that their presence would inevitably change the future in the form of the City Guardians, a security force under the employment of the Asami Corporation to protect the city from the Londerz. The City Guardians gain a tenuous relationship with the Timerangers, especially when Tatsuya's old rival Naoto Takizawa becomes TimeFire and later the City Guardians' Captain. In the series finale, the Timerangers go back to their regular lives. A year later Tatsuya is jogging when he sees five people who resemble the other Timerangers (including Naoto), but realizes it isn't them.

Riam is a beautiful woman who's always been unlucky in love. After three failed relationships, she vows that love and marriage is bogus. One drunken night, she stumbles back to her apartment but mistakenly goes into her new neighbor’s apartment instead, Ongsa. He is her childhood classmate that she teased relentless because he was pimply faced and refused to help her cheat on tests. Ongsa, many years later, is an established chef who has clear skin and no glasses. Though Riam doesn’t recognize him immediately, Ongsa knows which pretty face he’s staring at.

The next day, Riam collapses during a work meeting because of Chocolate Cyst, which is an ovarian endometrioma, a fluid filled cyst that forms in her ovaries. The doctor relents that there are two prognoses. The first one is to have surgery, but there’s a chance that it may return. The second option is to have a baby. Pregnancy lowers the risk. At first Riam doesn’t think her condition would likely escalate, but cancer is hereditary in her family, which makes her diagnosis even more grim. So Riam decides she shall go husband hunting and kick potential cancer to the curb.

Ban Ha Jin (Lee Dong Gun), an orphan and high school drop out, is calculating and ambitious. Even though he dropped out of high school and lives with Choi Yoo Kang (Yoon Se Ah) due to extenuating circumstances, he used to be the high school president and hoped to go to college. Through coincidence, he meets Yoon Jae Myung (Lee Jin Wook), the popular former baseball player from high school, at a bar in Switzerland. Ha Jin manipulates a series of events to become Jae Myung's best friend. Also coincidentally, he meets Oh Dan Hui (Kim Hee Sun), the girl he loved and hurt in high school. Oh Dan Hui used to play baseball on the boy's team but now plays softball in college. Her baseball hero is Yoon Jae Myung. All three meet again in Switzerland and again back in Korea. Ha Jin starts working in Jae Myung's father's company and does everything to make the rich chairman like him. Jae Myung starts working as the softball coach of his father's company's team but then gets transferred. He falls in love with Dan Hui who's headstrong and optimistic personality attracts him. He asks Ha Jin for advice, but Ha Jin cannot bear to watch Jae Myung take his true love.

Ritdha High School, the school that not only has gifted students but also the "Gifted Program," a gifted class with only a handful of "special" students were chosen to study in this program. Unfortunately “Pang” a 10th-grade student from lowest class suddenly passed the Gifted placement test for unknown reason. His entrance to the Gifted Program was filled with confusion. He and his new friends in the class started to feel that there is something strange about this class. Eventually, they figure out that this Gifted Program is unleashing something about their "potential" in themselves to be awaken. Their lives are about to change, when great power that fulfill all their dreams come with troubles. Their gift is about to reveal a secret that this school tries to hide.

Akiyoshi Ishida (Tomohisa Yamashita) has recently changed jobs. Akiyoshi Ishida begisn to see a woman with red fingernails at Y crossroad.