If you come to summer camp and are expecting fun adventures, but instead spend all day sweeping alleys and peeling potatoes in the kitchen, then there are two options left - either grab your suitcase and run, or entertain yourself. Arina Balovantseva and her friends did just that: they organized the secret mafia Brotherhood of the White Hand with its headquarters in the attic. However, a thief has appeared in the camp, and all suspicions fall on Arina! Dropping charges against your leader and finding the real thief is a matter of honor for the harsh but fair mafia...