Moyun Academy is the number one academy in Great Tang. However, it is said that a student of the school will become the catalyst for the return of the King of Demon. To everyone's surprise, a lowlife named Li Xuan is accidentally accepted into the academy.
The story is set against the backdrop of the prosperous Tang Dynasty in an era where humans and demons coexisted. The arrival of Li Xuan a human and demon hybrid, breaks the fragile peace. During this time, Li Xuan, demon spy Su Youlian and Long Wei'er develop complicated relationships. As Li Xuan eventually becomes a hero to the people, he faces a dilemma of having to decide where his allegiance lies.
Two people living on "parallel lines" were never meant to interact, but an unanticipated meeting transforms them into each other's destiny.
On a cruise ship bound for Hungary, fledgling art editor Chen Jiaxin meets the highly-educated Wang Xiyi, heir to a huge conglomerate. Flaring passions are quickly followed by 'I do's'. Then shortly after the wedding Chen Jiaxin becomes pregnant. She prioritizes family over her career before suffering a miscarriage.
Heartbroken, she journeys to Hungary alone. There she endures trials and tribulations. But with perseverance and help from friends, she becomes an accomplished potter. Meanwhile, over seven years of separation Wang Xiyi has matured into someone capable of raising a family.
Since so much time has passed, history and possibility converge when the two meet by chance in Hungary.
