Su Wanxing, the real daughter of the Su Group who lives abroad, was separated from her family due to a car accident when she was five years old. She was adopted by a couple in a fishing village and became childhood sweethearts with the boy next door, Shen Yan. As an adult, she used the crescent-shaped scar on her elbow (it was scratched by a rock when she was protecting Shen Yanzhi when she was young) to embark on the road to find her relatives, but she was involved in the conspiracy vortex of the fake daughter Lin Ruoxue. As the truth about their life experiences emerges, the five proud brothers of the Su family go from being suspicious to being crazy about protecting their sisters, and Shen Yanzhi goes from silently guarding to domineeringly pursuing his wife. A battle about family affection, love and power begins...
Su Wanxing: A real daughter, tough and sober, good at traditional Chinese medicine and acupuncture (foreshadowing: using medical skills to resolve Lin Ruoxue's frame-up), scars are the key to recognizing relatives.
Shen Yanzhi: The male protagonist is an e-sports genius. He looks cold but is paranoid and protective of his shortcomings. He and the female protagonist have a childhood code of "stars and moons".
Lin Ruoxue: A fake daughter, scheming and proficient in tea art. She framed the heroine by forging medical records and bribed the media.
The brothers of the Su family: the eldest brother Su Chengyu (the CEO of the group, with a cold face and a warm heart), the second brother Su Mingyuan (a top star, a maniac who protects his sister), the third brother Su Chen (a genius in the medical field, with a vicious tongue and cute contrast), the fourth brother Su Ye (a racing driver, a rebellious loyal dog), and the fifth brother Su Han (a hacker boy, the ancestor of sister control).