In Aunt Maude is an Alien, Milly and Molly are tired of Humphrey’s teasing, so they play a trick on him. They convince him that Aunt Maude is an alien from outer space, set on the destruction of Earth! Their trick is funny at first as Humphrey makes a fool of himself, but the trick quickly gets out of control and Milly and Molly soon regret their actions. In Stranded, Molly is frightened of crossing the river on the ferry for the class excursion. But once she shares her fear with her friend Milly, they are able to work through it. Molly uses this lesson to help another classmate when the excursion is trapped out overnight by rising floodwaters.