Oh, what a surprise! Pirates! Jonni just wants to quietly open the door to the 3b classroom and sneak to his seat as inconspicuously as possible so that the strict teacher Mr. Knickel doesn't notice he's late, but this can't be true! At least twelve dangerous-looking figures are sitting on the teacher's desk and on the windowsills. Jonni quickly realizes: These are pirates, and they have taken over the class! It takes him a bit longer to understand what they want: They have a thick book with them that supposedly contains information about where their ship has gone, which seems to have gone missing. Without a ship, they can't retrieve the treasure in the Ink Lake that they are after, that's for sure. Unfortunately, the only one who can read properly here is Mr. Knickel - and the pirates have locked him in the craft cupboard. How the pirates will get back to their ship remains unclear.