The Colossus Rises — Peter Lerangis

JUST ONE BOY...
Jack McKinley is an ordinary kid with an extraordinary problem. In six months, Jack is going to die.

JUST ONE MISSION...
After Jack collapses in the middle of a busy street, he's whisked off to a strange hospital in a strange place. There are armed guards and weird kids and fantastic creatures, not to mention no parents, no phones, and no possibility of escape. The place is run by an odd professor named Bhegad, who tells Jack that what's killing him is a genetic trait inherited from the prince of a long-lost civilization. It's destroying Jack by making him too strong too fast. He'll need to stay strong, though -- because it's up to him to save the world.

JUST ONE PROBLEM .
That long-lost civilization sank when seven magic Loculi were stolen and hidden around the world. Now Jack and his friends must find the Loculi before they fall into the wrong hands. If they don't, they'll never be cured, that lost world will rise, oceans will be displaced, and life as we know it will pretty much end.