One day, to solve the Mystery of a lady-in-waiting's murder in the inner palace, Tama, the poster girl of a flower shop (?), stepped forward to find the culprit. After solving the case for the reward, what awaited her was―― preventing the "assassination" of a tyrant!? "If it's for money, I'll even become a villainess." The curtain rises on a palace Mystery filled with puzzles and conspiracies, challenged by a girl who became the tyrant's consort!