Not only has the nutmeg disappeared, so have the oven mitts, and store-bought cookies! With a new mystery to solve, Britney and Mustard search the house, determined to figure it out before her mother returns. Armed with courage and night-vision goggles, the two believe they are after house elves. Rarely dangerous, these mischievous creatures collect and hide all kinds of treasures they find in human homes. This isn’t Britney’s first encounter with them – the last time she met up with them she learned a startling revelation about herself: one that changed her future forever.