阿根廷首都近郊的豪宅区，保安森严，与世隔绝，贝莲来打住家工，不懂欣赏中产阶级拘谨的魅力，发现通电铁丝网的另一边，原来别有洞天，天体营地春光乍泄。双面女佣从此活在分裂的世界。穿上衣服，她是表面勤快的阿四，见尽窗明几净、衣冠楚楚下的虚伪。卸下衣裳，加入天体俱乐部，她向往赤条条来去无牵挂的自由，化身野兽在野外交合。卢卡斯连拿把阶级矛盾的寓言推至极端，借鉴若松孝二把性与革命结合的主题，混合欧陆冷面幽默，向封闭的人心发动突袭。

Threatened by the end of the world, a group of Buenos Aires residents receive lessons in survival at a resort in the marshy Tigre delta. The Austrian background of Rinner, who trained in Argentina, shines through in this bitterly comical stylisation of human failings when face-to-face with the apocalypse.
In recent years, young filmmaker Lukas Valenta Rinner drily concludes, unease in the media concerning the impending end of the world has gradually increased - due perhaps in part to the devastating consequences of worldwide capitalism. At the same time, the ‘end of days’ itself has become a saleable commodity - for example, in many apocalyptic Hollywood films. Therefore, Rinner continues, it should not be difficult to come up with a tourism opportunity in which people prepare themselves for the end of the world in a natural environment, in fact then escaping from the demoralising routine of big city life.
In his fiction debut, the Austrian director, who trained and lives in Argentina, sends a colourful group of middle-class Buenos Aires residents on a kind of boot camp in a resort in the nearby Tigre delta, where under the threat of the end of the world they become distanced from their humanitarian ideas and transform from citizens into predatory beasts.
Rinner shows this in controlled, beautifully framed scenes in a style that could be called Austrian - whereby the ironic, at times cruel, desperate tone proves highly effective. The title, Parabellum, refers to 'preparing for war' and is also the name of one of the most popular 9mm pistols - the best calibre for ‘individuals’ to defend their complete freedom against interference from others.