Spring has finally arrived at Fairy Oak. The air smells of daffodils, long days, and games. But also, the rain. It rains for endless days. Thank goodness Poppy is there to cheer up the town's young people with a new and intricate mystery. The young and powerful witch has found, hidden in her aunt's sewing workshop, a very, very strange recipe book. Determined to find out what it is, Shirley drags Vanilla and Pervinka, and the entire Captain's Gang, on a series of extraordinary adventures.