The Peppercorns

By chance, Laurenz overhears a suspicious conversation between the owner of a cargo ship and his captain at a traffic light. The two scoundrels seem to want to sink one of their ships for profit. When Laurenz tells the other peppercorns about his suspicions, he falls on deaf ears. The clues seem too vague to them, and besides, a math test and an important karate exam are coming up. Frustrated, Laurenz sets out on his own to find the culprits and finally discovers their van in the harbor – loaded with a box of explosives. But before he can get help, he is overpowered by the villains...