Happy Cipher

At the suggestion of a friend from London, Inka Ygrekova creates her own unique cipher, which she uses to write down all her plans for the day. Now she forgets nothing and manages to do everything. But one day, a slip of paper with the cipher accidentally ends up in the wrong hands, and complete chaos begins! Inka's classmate is forced to conduct a real investigation, Inka herself meets a medieval warrior, and the goody-two-shoes honor student gets stuck on a Ferris wheel with a notorious troublemaker! And this is far from everything that a seemingly harmless slip of paper with neatly written numbers leads to…