Several seasons have passed since Leonard went on his last great adventure and battled a sinister force that had taken over Camelot. Since then he's settled into a comfortable life as Lord of the Green Valley. But when his beloved Glennys is threatened by a cruel giant from a kingdom in the clouds, Leonard and his best friend Hubert must team up again with Merlin, the half-giant Ham, and a young dragon named Taddy to save her before it's too late.