After a long journey, they reach the volcanic land and meet the natives – a tribe of "Onkilon".

However they soon find out that the volcano is cooling down quickly, and the legendary land is about to start to freeze so that its unique ecosystem is doomed.

Gubin chooses to stay with the Onkilons so as to share his knowledge and help them through the disaster, Ignatiy is killed, Krestovskiy falls from a cliff, and Ilyin has to return alone.

As they carry him to safety, he watches the migrating birds overhead flying to the Sannikov Land, still unaware of its demise.

Film featured two popular songs, written by Aleksandr Zatsepin and Leonid Derbenyov and performed by Oleg Anofriyev.