Mei Zhuyu, a calm and reserved nobleman from a lesser branch of the Mei family, arrives in Chang'an as an official at the Bureau of Mystic Investigations. During a banquet, he meets Wu Zhen, the bold and unruly younger sister of the Empress and secret Guardian of the Demon Underworld. Both hide their true identities. Wu, a half-demon striving to keep peace, and Mei, a skilled demon slayer, seek the truth behind the fire 18 years ago. As bone demons rise and unrest grows, they fight side by side, forming a bond that deepens into love until the Changxi Palace launches a purge, forcing them to face each other's secrets and the past they share.

Chen Jianxia, a girl who lived in a patriarchal environment since she was a child, longs to escape from the oppressive family. She is admitted to Zhenhua Middle School, where she meets the rebellious but kind-hearted boy Li Ran. Li Ran becomes the only light in her life. She is like a forgotten spaceship in the universe, and he is the only answer in the radio that has been silent for many years.

Pei Qian accidentally gets an invitation from a mysterious big brother to start a company that must aim to lose money, and eventually becomes a conscientious boss in the hearts of his employees and an industry-recognized business whiz!

Tang Yang and Jiang Shi Yan were high school classmates and are close friends for ten years. After finishing school, they both passionately pursued careers in bank credit review and new media communication. Tang Yang helped the families of military martyrs start businesses in her small loan job. Jiang Shi Yan, inspired by their perseverance, made a documentary about their stories, which gained widespread attention. Throughout this journey, the trust and understanding they developed since their teenage years endured various challenges and blossomed into a sincere and beautiful love. They went from being classmates and friends to becoming partners, building a family, and facing life together.