One spring evening, three strange visitors arrive in the town of Covenly. Sisters Hildegurp, Yuckmina, and Glubbifer are hoping to start fresh with a new business: a pet store! Their first customer is nine-year-old Jessica Nibley, who has lost her pet goat and hopes the sisters can help track it down. But when the sisters discover a mangled note with missing pieces that suggests they aren't welcome in town, they suddenly have two mysteries to solve.

Jessica and the sisters jump on a broomstick and fly off to investigate. As they collect clues and get closer to solving the cases, Covenly residents start to look beyond the sisters' unusual appearances and welcome them to the community as they are.

The first volume in this whimsical chapter book mystery series is filled with hilarious misunderstandings, clever wordplay, and dynamic illustrations. The sleuthing sisters, who are inspired by the three witches from Macbeth (there's even a recipe for a witch's stew!), invite Covenly residents and readers to look past appearances and embrace people for who they are, weirdness and all.