Kaja er en ung pige, der er på den politiske sommerlejr på Utøya i 2011 – også den 22. juli, hvor deltagerne bliver udsat for et terrorangreb. Vi følger i realtid Kaja og nogle af lejerdeltagerne fra kort tid før og under hele skyderiet. Gennem panisk flugt og angstfyldte valg, er hun samtidig meget urolig for sin lillesøster, som hun er kommet bort fra. Filmen følger de virkelige grusomme begivenheder tæt, beskrevet gennem opdigtede personer.
An Erik Poppe's recreation of the horrible Utøya massacre that took place on 22 July 2011. What happened on this tragic for the Norwegian people date, is that the far-right extremist Anders Breivik murdered mercilessly 69 young people who were enjoying a summer camp on the Norwegian island of Utøya. Moreover, earlier that day he detonated explosives in the government quarter of Oslo, the capital of Norway, which killed eight more people. The film shows the 18-years old Kaja, 12 minutes before the first shot is fired by Breivik. U: July 22 was selected for the main competition section at the 68th Berlin International Film Festival. However, this particular movie prompted a heated debate related to the ethics and true value of recreating contemporary tragic events and terrorists’ attacks with the means of the cinematic art.