Finally, vacation time! For a week, Tilda and Anni are allowed to move into the shed in the garden of Tilda’s grandparents. From there, they can secretly climb over the wall into the neighbouring garden every day. There lives Mr. Bovist, and he has important tasks in store for the two girls and their new friend Lilian: They have to pass the exam to be allowed into
the circle of adepts growing magical flowers! But then, Tilda’s sister Leni threatens to spoil it all by moving into the shed, too – and she refuses to leave again.
Can the three friends find a magical flower to help them with this problem?