Stine and Teit, your average urban middle-class artists and intellectuals, leave Copenhagen for the wilds of neighbouring Sweden’s forest. Soon, they find out that something is strange there – most disturbingly – when their son Nemo suddenly thinks his mother isn’t really his mother anymore. It becomes clear once Stine and Teit discover that they have neighbours who look exactly like them – mirror images made flesh and blood.
The subject of reflections and doubles is introduced in the film’s first shot: a view of a lake landscape turned 90° so that the water’s surface runs vertically through the image’s centre. Only once the shot gets tilted is it revealed which side mirrors which. Later, a mother and child are reflected in a glass door.
However, this is not your doppelganger thriller of the gothic variety. Note the title: in physics, superposition means (per Merriam-Webster) "the combination of two distinct physical phenomena of the same type (such as spin or wavelength) so that they coexist as part of the same event". This is more a metaphysical meditation towards the realisation that none of us is ever alone, but also never unique.

A poignant drama about a Danish family's unbearable loss and total disintegration, but above all about the faith and hope that miraculously gives them the superhuman strength not to give up.

丹麦哥本哈根北部最富裕的社区发生了一起离奇事件：年轻的菲律宾住家帮佣露比突然失踪。邻居塞西莉对此深感不安，坚信案件背后必有隐情。在塞西莉雇佣的帮佣安琪尔开始调查坊间传闻之际，犯罪嫌疑的阴云愈发浓重。

然而外籍人士失踪案并未引起警方重视，新晋警探艾莎亟需多方协助。塞西莉与安琪尔决心介入调查，随着调查深入，这些华美宅邸中潜藏的阶层权力结构与特权体系逐渐浮出水面。当失踪案的线索竟与塞西莉本人的家族产生勾连时，这位执着追寻真相的雇主陷入了前所未有的困境。她不得不直面认知盲区，以全新视角重新审视自己的家庭环境，以及子女成长所处的社会生态。