There is something wrong with Kasimir, the ghost of Castle Eintracht. He can no longer float and go through walls. In his distress, Casimir wants to travel to Scotland and ask his uncle for advice. Benjamin offers his help as a "ghost", while Kasimir is not in town. But the heirs of the castle, Heiner and Reiner Keiner, do not care about ghosts and throw Benjamin out. Otto rushes to help the elephant, and together they try to scare away the brothers. Kasimir's ghost sheet provides valuable help. It turns Benjamin into a real scary ghost elephant. But only when Kasimir returns healed, the brothers can finally be defeated.