Gobo, Red, Mokey, Wembley, and Boober Fraggle discover the legend of the Celebration Stone - an ancient Fraggle treasure that has the power to bring everyone together for the greatest party of all time, but was shattered and lost generations ago. As the Fraggles set off on an exhilarating, adventurous journey exploring exciting new caves within Fraggle Rock and even beyond, they discover magic that they never knew existed, and learn to work together to unite the lost pieces of the magical artifact. Can the Fraggles succeed in their quest to bring the Celebration Stone back to Fraggle Rock so everyone can enjoy the most incredible party in Fraggle history? And along the way, will they find something even more memorable and heartfelt than they could have ever imagined?