Fang Yu from Médecins Sans Frontières mysteriously returned to city A without contacting acquaintances. She changed her past free and lively and enthusiastic personality into a cold royal sister, with secrets in her heart that are difficult to share; Xu Tiankang, a good and stable man, did not expect that after his wife Huang Xiaomei divorced him this year, a series of strange things began to happen in his life, pulling him into a world that was very different from his previous life, and he gradually transformed from a good old man into a domineering president. The two people, who are incompatible with each other and have very different personalities, will create sparks due to the mysterious death of the star trader Yang Qian. They will gain salvation through love and find the "next exit" of their respective lives.
Fang Yu—the first female, an outstanding doctor of Doctors Without Borders. She was a popular figure on campus when she was a student. She has performed missions in many places around the world. Due to the mysterious disappearance of her lover, she was depressed and temporarily returned to work in China.
Xu Tiankang - the first male, nicknamed Yasuo, is a good old man, easy to talk to, and was divorced. Even though he has 10,000 indecisive shortcomings, he is kind and honest, and it is easy for mature women to feel compassion and help him.
Wang Qianqian - the second female lead, nicknamed A Chinese Ghost Story, the little rich woman, Xu Tiankang's best friend and first love in college, and a large fortune after she divorced her entrepreneur husband
Sun Peng - the second male, a doctor of quantum physics who came back from the United States, works for a mysterious organization, he was a warm and handsome student when he was a student, but deep down he is cold-blooded and ruthless. He works for an organization that is opposite to Fang Yu, and has a crush on Fang Yu by chance.
Mohammed - the third male, Afghan-American, doctor of medicine, from an elite Afghan family, spent his childhood in Afghanistan, immigrated to the United States with his family as a boy, met and fell in love with Fang Yu at Doctors Without Borders, and then disappeared mysteriously.
Li Jinke - the fourth male, was Xu Tiankang's colleague when he was in a state-owned enterprise. He was smart and handsome and was appreciated by his boss. He fell in love with Fang Yu's royal sister Fan and looked forward to a sibling relationship with Fang Yu.
Yang Qian—the fifth male, nicknamed Lao Qian, a star trader in City A, and a good friend of Xu Tiankang's university— committed suicide under mysterious circumstances. Everyone's story revolves around his death.
The third female - Xie Qingying, the attending physician of Boai Hospital and a doctor of neurology. She admired her senior sister Fang Yu when she was a student. She dated Yang Qian briefly and was Yang Qian's last girlfriend before his death.
The fourth female - Xiao Xu, Fang Yu's assistant, is a fashionable and lively young man who likes Li Jinke, but never dreamed that Li Jinke would be attracted to his leader Fang Yu