Karlsson is a very short, portly and overconfident man who lives in a small house hidden behind a chimney on the roof of a very ordinary apartment building on a very ordinary street in Stockholm. When Karlsson pushes a button on his stomach, it starts a clever little motor with a propeller on his back, allowing him to fly. Karlsson is the best at everything, at least by his own account. In actual fact there is one thing at which he excels: being a playmate to a young boy named Svante, nicknamed Lillebror (little brother), who lives in the apartment building with his family. Karlsson is quite mischievous, often getting Lillebror in trouble, but everyone in the end – even Lillebror's family, his cranky uncle, and their dour housekeeper – grow to like Karlsson and appreciate his sense of humour, energy, and good nature.

Half the film was shot with a video camera taken from a television station without permission, the cast and staff were unpaid, and the script was written as a screenwriting class assignment.

“Landscape with Many Moons“ is a drama about a middle-aged man who lives a seemingly ordinary life with his wife and children. The truth is, however, that their relationship has reached a dead end but they prefer the illusory decorations of living together to the free fall into emptiness. The man gallivants around between his previous and current relationships without knowing exactly what to do with them. Living on the edge starts to overburden his nervous system and as a result, actual reality and dream-like reality blend together and it becomes ever harder to distinguish between what is real and what is not.