Lukas Moodysson has circled back to his roots with this ingenuous, good-natured story about three lonely 12-year-old girls in 1982 who form a punk band. It is a long-overdue rediscovery of humour and gentleness, based on a graphic novel by the director's wife, Coco, Moodysson and possibly doubly autobiographical in the sense that Lukas and Coco are remembering their own teen rebellions and casting a keen eye on their children. Mira Barkhammar is the introverted, bespectacled Bobo, the driving force of the band, who finds herself marginalised by the dynamic, prettier Klara (Mira Grosin) and talented guitarist Hedvig (Liv LeMoyne). The movie is more about their downbeat, dull, day-to-day lives and interminable, inconclusive band rehearsals than any actual musical identity; all this is entertaining and real, though it's strange that they never discuss what their name is going to be – what band in the world doesn't agonise over that? There is a Bugsy Malone feel to We Are the Best!, a spectacle of children playing at being adults, and doing it inevitably badly. But not as badly as the actual grownups.