When a story is hard to say, because on planet Earth "has the time", mixed age... Sir Lavoie, a typical scholar-hermit, leave the Capital and went to a colleague in another city. The house is hosting merry trio of servants: the maid, the Dol, the footman Face and the Butler SATL.

A Red Army officer Polevoy possesses a navy dirk with a secret message encrypted in its handle. The second part of a message belongs to a White army officer Nikitskiy. It's up to three young friends of Polevoy to uncover the mystery.