A mysterious presence called The Sound causes terrible consequences for anyone who hears it.
The "plot" is kinda your basic recipe for horror movies where monster get invoked by mysterious object/sound/whatever. What really worked well is the atmosphere was crafted well, the build-up is slow and steady, the children and dog actually are believable. || The brother disappearing in the dark was well done and cool even if already used in other movies ||. So yeah like I said good atmosphere the sound really plays a big part for the ambience of it too ever so slightly eerie. The ending is || your basic jumpscare I'd say in horror short movies even if you have a follow up to it that makes you feel uneasy again so that works well still ||