"After a long and eventful life, Allan Karlsson ends up in a nursing home. The only problem is that he's still in good health, and in one day, he turns 100. A celebration is in the works, but Allan isn't interested (and he'd like a bit more control over his vodka consumption). So he decides to escape. He climbs out the window in his slippers and embarks on a hilarious and entirely unexpected journey."--from inside front cover.