The film is based on a series of immensely popular Swedish children's books, about the boy Bert, who is just hitting puberty and having the usual problems with it. But that's where the usual ends abruptly.
Five young field-biologists are sent to northern Sweden to investigate effects of a large forest fire. However, what was thought to be some weeks of camping and easy work soon turns into a nightmare as they find the remains of a mysterious creature and take it in for examination...
A tale of a boy from a wealthy family who during his work at the post office steals Christmas gifts from the wealthy to give to the poor people of Stockholm.