Della Duck has faced every danger the moon has to offer to reunite with her family, but greatest challenge is one she might not be able to fight her way out of.

While trying to find a way to free Lena from the Shadow Realm, Webby meets a new girl, Violet, who has a similar interest in the supernatural and invites her to a sleepover. But the ghostly Lena, who is watching them from the Shadow Realm, is concerned that Violet has ulterior motives.