The universe is larger than the average imagination can even begin to fathom. Now take that size in cubed whateveryouwants and times it by a billion. You are finally beginning to scratch the tip of the iceberg.
Straight down (an undisclosed and mysterious direction) past all known galaxies, galaxy clusters and super clusters, is "The Nothingness." An area of absolute blackness devoid of any and all matter; it is what separates the human universe from "Flat World."
This infinite plain is a never-ending backdrop of strange and diverse topography, complete with countless species of unimaginable creatures and intelligent life forms alike.
Led by a two foot tall yellow being known only as, "The Horned-Devil," the two Earth children Seth and Jo, along with an amiable Saint Bernard called, Buffalo, will traverse forests larger than the surface of Jupiter, Oceans that make the Pacific look like a mere puddle, deserts with seemingly no end, plus much, much more.
But only once they face the hardships and tribulations of this epic tale, will their true and ultimate destiny be laid before them.