Sophie, a curious and healthy eleven-year-old girl, is confined to a hospital bed under her mother’s constant watch. When she meets Buck, a cheerful nine-year-old adventurer, they embark on a journey of self-discovery and movement. As they explore together, Sophie begins to question the reality of her situation, wondering if she is truly as unwell as her mother insists.

After separating heaven and earth, Tengri, the all-embracing God of heaven in the traditional Turkic, Yeniseian, and Mongolian beliefs, divided himself into man and woman to procreate. He named the woman the goddess Umai and settled her atop Mount Sumeru in the sky, near a milk lake called Sutkol. Here begins the story of Umai – the ancestor and spirit of women – on the vast steppes of the nomadic lands.

Alone at home, a woman is immersed in a bizarre adventure of the mind. In the intimacy of her space, her imagination knows no bounds, transcending time and space as she revisits memories and glimpses into the unknown. However, this solitary exploration is disrupted by the sudden presence of an unexpected intruder.