Sophie grew up in an orphanage and was adopted by the wealthy Johnson family at the age of six. She spent twelve happy years under the love of her three elder brothers and adoptive parents. However, when her adoptive parents' biological daughter, Camille, returned, Sophie fell from being the cherished gem to a misunderstood and hurt outsider. Camille maneuvered step by step, constantly framing Sophie, while the family chose to listen selectively, and the repeated coldness and hurt left her disheartened. Sophie decided to become the first volunteer for her elder brother's 'Sleep Project,' which had been planned for five years, repaying her adoptive parents’ kindness through a life experiment. On her eighteenth birthday, she severed all ties with her family, entered the sleep chamber alone, and donated her corneas to her blind second brother. When she awoke after thirty years of slumber, her family had grown old, but she could no longer remember them—leaving only that misplaced familial affection, etched as an eternal regret through the river of time.