After traveling the world alongside migrating birds and diving the oceans with whales and manta rays, Jacques Perrin and Jacques Cluzaud return to more familiar ground: the lush green forests and megafauna that emerged across Europe following the last Ice Age.

Following the tragic death of her father on her eighteenth birthday, India Stoker meets Charlie, her charismatic uncle, whom she never knew existed. When Charlie moves in with India and her unstable mother, both are drawn to his charming and calming demeanor. But it soon becomes clear that Charlie's arrival was no coincidence, and that the shocking secrets of his past could shatter India's future.