Loving, loyal and unafraid, the daughter of a wanted robber chief makes a secret friend in her father's magical and treacherous forest.

Pia's life, a girl from a small German town, changes when surprisingly, finds in her garden a huge black monster. She soon discovers that the mysterious creature, which is called Yoko, is actually a kind yeti spiritually protecting animals and children worldwide. Its great value calls attention to two hunters who want to take advantage of the yeti.