After the destruction of his castle, Ludo is thrown into the cosmos by Star and lands in a forested location. He competes with a giant spider as they go ice fishing. When a bag of potato chips is found, he and the giant spider fight until he wins. He also tames a bald eagle. When he spots Star in the woods, he chases her until he realizes he is back on Mewni. He also obtains a wand of his own which holds the other half of Star's wand magic.
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.