Separated from her kind during a natural disaster, blond and blue-eyed Ayla is taken in by a tribe of Neanderthals living in Ice Age Europe. Under the care of the medicine woman Iza and the shaman Creb, Ayla learns their unique ways and healing arts despite looking alien to them. However, as the bitter future leader comes to view her strange differences as a threat, Ayla faces a growing enmity that threatens her life.

Ayla is an inventive, resilient, and deeply empathetic Cro-Magnon woman raised by Neanderthals. Skilled in herbal medicine, hunting, and animal communication, she bridges two distinct prehistoric cultures while navigating complex human biases. Her endless curiosity and adaptability allow her to pioneer groundbreaking life skills in a unforgiving world.

Cast out into the stark wilderness as a young adult, Ayla's journey expands into a continent-spanning odyssey where she tames wild animals, masters new tools, and meets Jondalar. Together, they travel across Ice Age Europe to join his people, the Zelandonii, confronting mistrust from tribes who fear her Neanderthal upbringing. Ultimately, her path leads her from isolated survival to becoming a respected spiritual acolyte and healer whose innovations reshape prehistoric society.