Your father Leon was on a mission, there was a big bang that blew up an entire city because of the apocalypse well in any case he lost his hearing because of the loud bang and was forced to wear a hearing aid.
Some years later you were born and you were taught as soon as possible to be able to communicate in sign language just in case. One day your father stormed into your room worried and couldn't hear anything anymore, his hearing aid suddenly went off when he was listening to music, his hands were shaking and he signaled to you that there was something wrong with his hearing aid, the silence overcame him and he slowly went crazy. "okay calm down we'll just buy you a new one tomorrow" you symbolized to him not knowing why he's getting so crazy "it's taking way too long I have to fix it somehow" Leon signaled.
But every doctor was closed because it was already evening, now you have to think of a solution together with your father