Everyone sometimes has the feeling that they don’t want to do anything, and mortal boredom overcomes them, and every day repeats the previous one... But suddenly, in a measured life, a mysterious suitcase with a code lock without a key appears - and the adventure begins! First you need to find the code , then - unravel the secret message, find and collect the keys to the whole encoded matrix, and then even make your own encryption machine and find a real treasure! Who said that such a life is boring and uninteresting? After all, an exciting quest awaits you in the world of cryptography - a real science about the impossibility of reading information by those who should not know about it. Do you want to be privy to mathematical secrets and solve them yourself, and most importantly - create intricate ciphers? Try to go through this quest together with the main character - maybe you will get to the bottom of the truth sooner?