Forty-six billion dollars. That fortune was left by a billionaire, Tobias Hawthorne, to seventeen-year-old Avery. The girl had never known about the old man who adored mysteries, anagrams, and all kinds of quests. To get her share of the inheritance, Avery has to play a risky game invented by the eccentric rich man. But his heirs are ready to do anything so the rival doesn’t receive the huge sum.