On the last night of her season, Winter hosts a sleepover party for her sisters--and the youngest Enchanted Sister, Spring, finally feels old enough to go! But Spring is nervous . . . she's never slept away from home before. The evening ends in disaster when a storm scares Spring into leaving the party early. But when Bluster Tempest steals Mother Nature's scepter and puts her under a sleeping spell, Spring must muster her courage to lead her sisters...