10 year-old Nicholas is a boy genius with a little too much time on his hands. Add the frustration of yet another family move and he's determined once and for all to plan his own destiny —by building a time machine. But when the initial tests go awry, particularly the one involving his little sister Bethany, Nicholas must scramble to set things straight... before his mother finds out.

The idea behind Test Subject B came about from a variety of sources, which include 80s "kids magic" movies (Back to the Future, E.T., Goonies, etc.), Calvin & Hobbes comic strips, and that elusive childhood spirit to spend every ounce of creative energy making something that really worked. What could beat the sensation of waking up on a Saturday, spending the morning in a cartoon stupor, and then feeling the urge to spend the rest of the day building a gadget in the basement? Anything seemed possible. Even a time machine.