Something strange and terrible has been happening in Nuworld. Some of Goel's most trusted servants have disappeared. 'Find my servants and bring them back,' Goel tells the Seven Sleepers, 'but be careful, you might be next.' That could never happen, of course. Josh and the others know Goel too well to be tricked by one of his enemies. Besides, how could anything as fun as a dream machine give them problems? With only a list and a secret password, Goel sends them on their most dangerous mission yet. Recommended for ages 11 to 14.