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 finds, Brooklyn and Malibu prepare a costume party to get these furry friends adopted. With treats, music, and dancing, the party bound to be a success! But when their handmade costumes for the pet parade go missing, Malibu and Brooklyn are worried.