Avery Gray is born with a special non-human constitution. Since childhood, she has relied on special medicine to maintain her human form and temperature. Without the medicine, her body will mutate and lose control. Her greedy, power-worshipping mother abandoned the family, divorced her father and remarried a wealthy businessman, disgusted by her daughter’s strange condition. Avery was sent to her cold biological father. Expecting neglect from his new family, she was instead warmly accepted and cherished by her kind stepmother and gentle younger half-brother, gaining precious family warmth. A mysterious young man who knows all her secrets has guarded her silently for years. He always steps forward to save her whenever her identity is exposed or her body loses control in crises.