The Stone Age, the time of mammoths and cave bears. Young Squirrel from the kaya tribe is banished from her native village — to become an adult, the girl must undergo trials and receive her true name. But everything changes when mysterious “iron birds” attack the kaya settlement and abduct all the people. Now, to gain her name, Squirrel must find her tribe. She does not yet know that the path leads far to the north, to the experimental base “Pangaea.” To the place where a mysterious woman with half a face conducts monstrous experiments on people.