Kang Baek Ho realizes that he is in love with his best friend, Ham Yi Seul, on the day of her wedding to another man. He travels back in time to various events of their lives hoping to change the outcome of their relationship. Will Baek Ho be able to change the course of their future?

Set in the Joseon Dynasty during King Jeongjo’s reign, this martial-arts fusion sageuk is centered around the events involving Crown Prince Sado’s conspiracy. Warrior Baek Dong Soo was a real-life legend who created a martial arts guide in Joseon. His group who defends King Jeongjo is pitted against a mysterious organization of assassins who plot to kill the King.

The story of a conglomerate family and the legacy of the first generation son, whose thirst for power and wealth marked the beginning of a story of love, passion and destruction.

Kang Suk Ho is an ordinary lawyer who decides to teach a bunch of rebellious students. He promises to get five of them into their most prestigious college in the country.

King Jinpyeong did not have any sons to name as a successor to his throne. Thus he named his eldest daughter, Princess Duk Man, to be his successor. The drama will be about the life of Princess Duk Man who was later known as Queen Seon Duk, the first Queen of Silla.