Susan thought she was safe when the space aliens left Earth, but her mother Edna went with them and managed to get herself chosen as queen. Now Susan has to travel across the galaxy to stop a civil war. The ghost of Susan's great-grandmother is only one of the unexpected allies who join the battle, both on the alien planet and back on Earth. On the journey, Susan learns how strong she really is, and why she should carry an embroidery project wherever she goes.