Tomorrow you will wake up and all the letters will be replaced by roman numbers. That'll be "ok" when you'll learn the replacement's order!
Nevertheless, today you have the possibility to make it a dream if you are able to translate
That won't happen thanks the two following sentences:
XXIV-VI-III III-XI-IV-V-XVI? Bye Earth? XII-XIX-III-III-X II-III-XIX-XIX, XII-XIX-III-III-X V-VIII-XV-XVI-V! Sleep well, sleep tight!