Olsenbanden jr. - første kupp

In the early 20th century, Luka, a poor, crippled young boy from the wrong side of the tracks, stumbles upon a theatre at the end of a carnival, where he befriends a bunch of kids who work and live at the theatre, and he feels more at home there than he has anywhere else. However, at the same time, an evil, ruthless upper-class woman on the brink of bankruptcy plots to sell the theatre to gain some extra money, and if that happens, everyone at the theatre will be thrown out into the streets. Luka works together with his new friends to try to save it.

There is a lot going on in Svingen in December, some things are quite common Christmas traditions, while others are a little more special. The children celebrate Lucia Day, the annual ski relay takes place, there is a competition to find the most beautiful Christmas tree, huge quantities of gingerbread are baked, the children go caroling, they rescue a fox that has been hit by a car, and they build a snow castle and end up in a real fight with the Sletta gang.

Selma, a 9 year old girl who lost her parents in an accident, is now living with Ruth, a quite strict neighbour who was just supposed to temporarily look after Selma and her dog Casper.