Aja takes them to Zetlin's fantasy, where Zetlin resides in a massive building called the 'Barbican', which can either stand upright or on its side. The first level of its structure is a tropical jungle filled with plant-animal life forms. The second level is a sort of large pool, with racing motorboats following lights. The level after that is a snow-covered landscape, where Bobby has to finish a race called slickshot in which six skaters need to pick up red balls and put them into buckets. Unfortunately, only four people can finish the race. Bobby finishes the race (with a bit of intervention from Loor) and sees that Zetlin is actually one of the racers, a popular sixteen-year-old called the "Z" in his fantasy. Bobby, Loor and Aja convince him to spill the code, which turns out to be "zero." When Aja enters the code, it turns out that Saint Dane sabotaged it. The Reality Bug takes physical form (a black ameoba-like shapeshifter), and chases Bobby, Zetlin, and Loor around Zetlin's fantasy home, and even into the real world when it grows too powerful to be contained by Lifelight. They leave Zetlin's jump and shut down all of Lifelight, and the Reality Bug is destroyed. The Travelers feel they have beaten Saint Dane—again.