In this sequel to Traveling to the Fourth Dimension we follow Martin Westle Parnes and his two sons, Fillip and Dan, as they continue their adventures in the year 3459. Their friend Jess, an intrepid electronic beetle, is always at their side. Martin attempts to rescue his friends who are trapped in the fourth dimension, but he ends up in the fifth dimension instead. Mathonog, Soseph, and their rival Mourndess scheme to get the mysterious Shattering Device, while a strange boy Jace spices things up with his unpredictable interferences on all sides. As the barriers between the dimensions weaken, Martin battles his enemies and his own subconscious fears to bring everyone home safely. And so his journey continues.