When eleven-year-old Pru and new boy ABE discover another world beneath their quiet town, where Viking gods lurk just out of sight, they must race to secure the Eye of Odin, source of all knowledge--and the key to stopping a war that could destroy both human and immortal realms.

Norse god Loki records the highs and lows of living on Earth as an eleven-year-old in grumbles, snarks, and doodles in his enchanted diary. He might not have shown any moral improvement (yet); but Odin has given Loki another chance to prove himself worthy of Asgard. Earning everyone's trust isn't easy, however. So far, Loki has managed to make only one human friend, Valerie, but is now irritated to learn that Valerie has made another friend, Georgina....

"It's been a year since friends ABE and Pru joined Mister Fox's Fantasy Investigation Bureau--otherwise known as the Unbelievable FIB. In their next adventure, they must outrun trolls, explore Asgard and the Viking underworld, and try to outsmart the Queen of the Dead herself to change fate, save the world--and survive seventh grade"-- Provided by publisher.