This World tells the inside story of the 2011 massacre in Norway, offering new insights into the life and mind of the perpetrator, Anders Breivik, and exposing the hidden hatreds that inspired him. Through interviews with key players, including the Norwegian prime minister, survivors, the commander of the police response and the head of the Delta Force team that arrested Breivik, and including unique footage and unseen archive, the film pieces together, minute-by-minute, the course of the attacks and the response of the security services.