Princess Arabella is bored of palace life and trades places with Tom, the shepherd boy. But tending sheep proves no fun either—so she starts playing pranks, crying “WOLF!” and later “TROLL!” just for the thrill of it. The villagers rush up the hill twice with no monster in sight. On her third cry—“DRAGON!”—they ignore her completely… only to discover there really is a dragon, and Tom alone steps up to save the day.