Morgan is a young mouse living happily in a small mouse village with her family. But, when Morgan's older sister, Marsha, goes missing, it's up to Morgan (along with a few newfound friends) to go on an adventure to find Marsha. Meanwhile, Marsha herself has a small (plus VERY scary) adventure of her own. Even the rest of their family must go on a quest to find both Morgan and Marsha It's three mouse adventures. . .in one book. Will each journey have a happy ending?