Jim is a 12-year-old outsider. One day Terje (an overweight boy who claims to own a pit bull) starts in his class. He considers Jim as his best friend, but the only friend Jim can get is the only friend he really doesn't want.
Tough, naughty, quick-witted and brave Lillebror has just moved, and has not made any new friends yet, when his imaginary friend – the wooden twig Knerten – appears in the middle of a pile of firewood...
When Lillebror's mother is mysteriously hurt in a biking accident, Lillebror and Knerten turn the town upside down trying to find the culprit.
