Finally summer vacation! Schoko is looking forward to spending lots of time with Lotte, cozy rides to the lake, and the occasional ice cream cone from the shopkeeper. But not so fast! Oskar and Maria want to organize a camping trip at the Blümchenhof, and since the boss is traveling to a breeding show with Finchen at the same time, everyone has to pitch in. It's not easy to keep five little vacationers in line. When Oskar's piggy bank with the camping budget goes missing, the excitement escalates: Is there a thief at the Blümchenhof? Or could one of the children be involved? Of course, Commissioner Schoko is on the case!.