To survive everyone in the train had work together and help others. When it was Lina's mom's turn to get off the train, she went saw a candy store and bought some candy. She went back into the train, she put all the candy on the floor so people could choose their own candy. When they were at Trofimovsk (The top of the Arctic Gircle, near the North Pole), everyone huddled together to stay warm.
Because no one lives at Trofimovsk, so they had to build their own house. They made a house out of logs, mud, sand and moss. One day, Lina and some other people found a dead owl on the ground, and they brought it back to their house and cooked it.