Amidst great mystery, Hugh is left in the care of Glastonbury Abbey by his father who must flee to England too swiftly to be burdened by a crippled son.

Dicckon struck flint and lit a candle, then led the way into the dark passage. "What is this place?" asked Hugh. A sudden turn and they were in a low stone-lined room, along two sides of which were heavy black oak chests. Dickon raised the lid of one, which creaked and groaned...

Thus do two boys come upon the hidden treasure of the great Abbey of Glastenbury--the treasure, it is said, of King Arthur himself.