Star tries to use her wand to clean up the Diaz home before Marco's parents return, but ends up summoning a whimsical cloud that makes an even bigger mess. Meanwhile, Ludo tries to activate his so he can fight off some rats at a tavern. learning that it works when he gets beat up and enraged.
After having skirmished with a number of dangerous monsters, Star Butterfly arrives on Earth to live with the Diaz family. However, rather than living a normal life, Star continues on having to battle villains both throughout the universe and in their high school, although if only to protect her extremely powerful wand, an object which she is still confused with.