On his first day as a fourth-grader, Sune is welcomed by an unwanted surprise. A new boy is in his seat, and he's everything Sune wants to be. Not only that, but his name is also Sune - it's the worst possible start to the fourth grade.

On his first day as a fourth-grader, Sune is welcomed by an unwanted surprise. A new boy is in his seat, and he's everything Sune wants to be. Not only that, but his name is also Sune - it's the worst possible start to the fourth grade. Sune must use all his cunning to stop Sophie from breaking up with him and choosing the other Sune. At the same, Håkan notices that his big brother is about to enter the boring adult world, their dad Rudolf has a midlife crisis and wants to quit his job to pursue a career in music and their mum Karin glares jealously at the new Sune's perfect mum and her even more perfect car. Welcome to the Anderssons.—Unlimited Stories

Norwegian fourth grader Sune Anderssons isn't amused when his moved-in new classmate shares the same Christian name, is the one who gets to use just Sune while our native is addressed as Sune 2. He fears the interesting, soon popular intruder will even 'steal' his girl friend Sophie, but every effort to undermine his talented rival backfires for him or the whole class. Meanwhile his father Rudolf Andersson fears his editor job is a goner under the new editor in chief, so he writes a resignation letter to switch to his passion, music, only to find he was up for promotion. Mother Karin Andersson jealously rivals with new Sune's obnoxiously cool mother. Kid brother Håkan discovers the newcomers lied about returning from America, but Sune comes to realize his rival is no enemy after setting up his worst sabotage.—KGF Vissers