Intersperses a story about a glitch in the space-time continuum that forces people to relive the ten years between February 17, 1991 to February 13, 2001 exactly as they did the first time, with Vonnegut's thoughts and experiences during the summer and autumn of 1996.

After an especially rough tackle on the football field, Ash thinks he might be suffering some permanent damage, because suddenly stop signs are blue and always have been. After the second universe-altering hit, he drives a Beemer instead of a Dodge, and a pair of interdimensional twins promises him answers. The more universes he visits, the more Ash has to face perspectives he never thought to consider before, and the closer the universe gets to complete...

Megan goes for a ride on a magic carousel that takes her to a circus where she and her pony are the star performers in Mr. Scarletti's Amazing Travelling Circus. Includes facts about circuses.

At nearly fifteen years of age, Joey Harker learns that he is a Walker, able to travel between dimensions, and soon joins a team of different versions of himself, each from another dimension, to fight the evil forces striving to conquer all the worlds.

Thirteen-year-old Lucy Eberslee, the Gatekeeper's deputy at the end of the world, teams up with Arthur and Rosemary, who are from other worlds, to investigate why the doors between worlds are stuck.

Tucker Feye and Lah Lia each hurtle through time, relating their stories in alternating viewpoints that converge at crucial moments.

When twelve-year-old Becker Drane is recruited by The Seems, a parallel universe that runs everything in The World, he must fix a disastrous glitch in the Department of Sleep that threatens everyone's ability to ever fall asleep again.

When the Depression hits in Cairo, Illinois, and Oscar Ogilvie's father must sell their home and vast model train set-up to look for work in California, eleven-year-old Oscar is left with his dour aunt, where he befriends a mysterious drifter, witnesses a stunning bank robbery, and is suddenly catapulted onto a train that takes him to a different time and place.

Thirteen-year-old Atticus "Tick" Higginbottom begins receiving mysterious letters from around the world signed only "M.G., " and the clues contained therein lead him on a journey to the perilous 13th Reality and a confrontation with evil Mistress Jane.

Fourteeen-year-old Sunni, her stepbrother Dean, and an art-student friend trace the footsteps of a labyrinth built in Blackhope Tower by a mysterious and brilliant sixteenth-century artist, and suddenly find themselves trapped inside his enchanted painting, trying desperately to get out.