Blizzard Island (1988)

One day while their father was at sea, Tracey Allan and her brother Wayne found the necklace of Argon - a magical necklace that opened the doorway to the strange world of Blizzard Island. Blizzard Island is dying, and its death may affect our world. So with help from Rog, the Rogalonian sand creature, Tracey and Wayne are searching Blizzard Island trying to find the Great Argon, a mysterious sleeping giant, who is the only creature able to save both worlds.