Avery Grey was born with a unique physical condition, not belonging to ordinary humans. From a young age, she was aware of her abnormality, requiring a long-term dependence on special medications to maintain her human form and body temperature. If she stopped taking the medication, her body would undergo mutated mutations and go berserk. Avery's mother, Gentleley Grey, was extremely materialistic and ambitious, disdaining her daughter's unusual condition and believing she couldn't provide a decent life. She divorced her father early and remarried a wealthy businessman. With no one to rely on, Avery was forcibly sent back to her estranged biological father by her mother. She expected to be neglected and ostracized after her father's remarriage. Unexpectedly, her kind and gentle stepmother and her sunny and understanding half-brother treated her like true family, showering her with love and protection. Bearing her unique, superhuman identity and burdened by a deep sense of gratitude, Avery unexpectedly found the warmest family in a cold world. Meanwhile, the mysterious young male protagonist, who knows all her secrets, has been silently protecting her for many years. At every critical moment when her identity is exposed, her physical condition goes out of control, or she encounters a crisis, he will step forward to protect her and save her life.