As Della rebuilds her ship, Penumbra becomes convinced Della’s planning an attack. Meanwhile, Donald’s nap keeps getting interrupted by adventure.

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

Donald and Penumbra must break out of a Moon Prison and send a warning to Earth about a looming invasion. Meanwhile, Dewey and Webby uncover a sinister conspiracy targeting their family.