Princess Magnolia and Princess Sneezewort have plans . . . mysterious plans, like a princess playdate! They dress-up slam! They karaoke jam! But then a shout from outside Princess Sneezewort's castle interrupts their fun. It’s a monster! This is a job for the Princess in Black. Yet when the Princess in Black gets there, she finds only a masked stranger and no monster in sight. But all is not as it seems! Action and humor abound in this ode to friendship that proves that when shape-shifting monsters intrude on your plans, two heroes are better than one.