 He hears that two children are being held prisoner of terrible monsters called vogum in "Otherness", the wild magical worlds outside of Alypium, and he realizes they might be Danny and Sammy.A "snail mail" love letter, written on a real snail shell from a secret admirer, turns into a correspondence that helps Erec wind his way through the perils of Otherness to find the twins.Erec discovers the "monsters" are actually quite nice.