The horns of the creatures who drink alcohol have a measurement so large that they are revered the world over. The horns are revered both for their size and potency. The horns can be used in medicine, so they are very valuable, those alcoholic monster horns.
The reason you are interested in these revered horns so much is that your son (そん) is sick and you need one of these revered horns to make a medicine for your son. Only with the revered power of the horns will you be able to save your son’s life.