Black Square takes a documentative approach to the making of an image of the black hole that lies in the exact centre of the Milky Way Galaxy. Black Square documents the artist and the film crew as they journey across the Atacama Desert in Chile to the telescopes at the top of Cerro Paranal, where an astronomy team from the Max Planck Institute for Extraterrestrial Physics are at work, observing the galactic centre. The trajectory of the film dissolves into limitations, both physical and conceptual, exploring the dynamic between what can be understood and what cannot, a mobile threshold where intuition meets calculation. Reaching the limits of the resolution of the telescope, the film ends with the crew and astronomers staring at the black pixel on a screen that contains the black hole, a place where the digital and the physical realm overlap and intersect at their boundaries.