Professor Atlas and the summoning dagger

the long version

"In 1342, an old wizard stands atop a pile of rubble that was once a bustling village, complete with happy citizens, a vibrant marketplace, and a mighty castle. Cursing the conflict that brought this civilization to an untimely end, the old wizard bestows his last bit of magic on a spectacular dagger. He buries the dagger deep within the earth, praying that one day it will be found by somebody brave enough, and smart enough, to save the village from ruin. Centuries later, Tyler Gerard and his best friend Brandon Giles enter a contest, the prize for which is the opportunity to join legendary explorer Professor Fielding Atlas on his quest to find the Summoning Dagger of Mercastus. Although both boys have the full and active imaginations that are typical of seventh graders, nothing will prepare them for the incredible adventure that lies ahead"--Page 4 of cover.