In New Interstellar Year 3073, a fifteen-year-old girl known as Shen Chenfu disembarks from the old Blue Bay flying boat at Capital Star’s District 14 transportation hub. She has no identification, only a fake identity card from Planet M77, and almost no money. Her plan is to reach the lower districts’ underground trading city to obtain funds and information. While exiting the terminal, she sees two fat Noahde being attacked by an A-level ability user from one of the Five Great Families, his whip charged with lightning. Without revealing herself, she uses her Space Element power to create an invisible barrier that blocks the blow, startling the attacker into apologizing and fleeing. She then nearly fails the exit verification, but the same Noahde inadvertently help her pass, and the gate accepts her. She boards the cheapest hover bus, but before it leaves, a group of men in black suits—sent by the Lange Family—surround her and insist she must come with them. She pretends not to know the Lange Family but agrees to go, suspecting trouble.The bald leader takes her to a silver-gray aircraft and they fly to Sky Castle, the Lange Family’s floating residence, a lavish complex of eighteen small castles around a main castle. There she meets the old butler Evan and assistant Ethan. They address her as “Eldest Young Lady,” revealing she is Hill Lange, the missing eldest daughter of the wealthiest family in the Interstellar Alliance, lost for eleven years. She maintains that she is merely an orphan, but the butler insists. She is taken for a medical examination, which includes a paternity test and a full-body scan. The results confirm her identity, but also show severe malnutrition, a fatal brain injury, and C-level Mental Power with Space Element ability. The doctor suspects amnesia. An assistant with memory-reading ability attempts to check her early memories. Because Shen Chenfu fully remembers everything—including the incident when she was thrown into a Chaos Star Beast’s belly at age four or five—she forces her mind to focus on that void, showing only black and gray, confirming the amnesia diagnosis. She knows her so-called father, Fion Lange, wants her dead; only if she forgets the past might he spare her. She chooses to hide her true capabilities and memories.She is then led to the study of Fion Lange, the head of the Lange Family and President of the Interstellar Trade Alliance. He bluntly tells her she is Hills Lange and will live in Sky Castle from now on, offering her anything she wants. He mentions she has two younger brothers and an adopted sister, Jasmine, who are out but will meet her at dinner. Without responding to his promises, she directly asks where her mother is. Fion Lange does not answer, and his silence deepens her suspicion. The story breaks off as she stands in the study, her cold eyes fixed on him, ready to navigate the dangerous family she was born into. Her immediate objective is to survive the Lange Family’s scrutiny, regain her unstable power, and investigate the truth behind her mother’s disappearance and her own abandonment, all while planning to still reach the underground trading city to secure her own resources and independence. The conflict against her father and the family’s unknown schemes sets the stage for her hidden revenge and search for justice.