Emerald's overprotective mother comes for a surprise visit, but has no idea that her daughter is the legendary Mysticon Knight. As Emerald and Citrine have a mother-daughter outing, Arkayna, Zarya and Piper try to deal with a maleficent eclipse that strengthens dark creatures and send into a vicious frenzy. While Emerald shows her mother around Drake City, Arkayna, Zarya and Piper try to keep her from witnessing anything evil and dangerous, which proves a difficult task, especially with the eclipse looming nearer.