"Before Jack Frost was Jack Frost, he was Nightlight, the most trusted and valiant companion of Mim, the Man in the Moon. But when Pitch destroys Mim's world, he nearly destroys Nightlight, too, sending him plunging to Earth where, like Peter Pan, he is destined to remain forever a boy, frozen in time. And while Nightlight has fun sailing icy winds and surfing clouds, he is also lonely without his friend Mim. To keep the cold in his heart from taking over, he spreads it to the landscapes around him and earns a new name: [Jackson] Overland Frost. But a true friend always comes through, and on one particularly bleak night, Mim shines down and shows Jack a group of children in great peril. Through helping them, Jack finds the warmth he's been yearning for, and realizes bringing joy to others can melt his own chill"--,Provided by publisher.