Someone is frozen into the future.
When he woke up, time had passed and a robot appeared in front of him and led him to understand this new world. The robot told him that due to the movement of the earth's crust, the effect of the ice had been destroyed, and he needed to be awakened and live with current people.
It was a base where a group of young people under the age of 15 lived. There are no adults to be seen here - the adults seem to have entered a mysterious place close to eternity. Someone begins to realize that the new world may be full of differences...