In the near future, the Earth’s resources are gradually getting scarce. In order to continue the hope of survival for generations of children and grandchildren, top scientists from various countries have brought several species of animals and plants to Mars for research, hoping to improve the Martian environment through advanced science and technology to make it suitable for human habitation.

While he was in Macau, Pan Yiming unexpectedly receives a will from his father. They haven't seen each other in 30 years, still father left Pan Yiming with a huge hesitance, asking him to attend the funeral in order to inherit it. Pan Yiming returns to the small village in southern China, where he founds out his former lovers, daughters he has never met, and some residual memories and intricate secrets.

The Dragon Prince of the Demon Realm was ordered to assassinate Li Yue'e, a demon-catching master with unrivaled martial arts skills. By some chance, he became Li Yue'e's son-in-law. From then on, the assassination mission became confusing and full of jokes.