Barbie "Malibu" Roberts and Barbie "Brooklyn" Roberts are hosting a costume party at the Pet Rescue! Barbie "Malibu" Roberts and Barbie "Brooklyn" Roberts love volunteering at their local Pet Rescue, helping care for the pets waiting to find their fur-ever homes. With help from all their friends, Brooklyn and Malibu host a Halloween costume party to get these furry critters adopted. With treats, music, and dancing, the party is set for success! But when their handmade costumes for the pet parade go missing, Malibu and Brooklyn are worried.