Princess Magnolia and Princess Sneezewort plan a princess playdate with Dress-up Slam and Karaoke Jam, Playtime Romp, and Snack-time Stomp. Just when the fun is really getting going, they hear a scream from outside--a monster is trying to eat someone's kitty, and it is time for the Princess in Black to step in and save the day--but when she arrives, there is only another mysterious masked stranger.