Why is the black van still following Will and Sandra? Something is wrong in Normal.
The perfect summer of being eight years old continues in a way that even two precocious kids with vivid imaginations could never have envisioned. The day before the first game of the Little League season Will's papaw reveals a family secret that not only explains the odd things that Will has been experiencing but also changes his immediate plans.
While poking around in the abandoned old house down the street, looking for a half-fairy/half-human named Homer Underby, Will and Sandra are surprised by an old lady who appears to live there. As they try to help her out, it becomes clear that she's troubled. But when they attempt to assist her, they uncover an unsolved mystery that happened twenty years before.
As the amateur sleuths investigate, strange men grab Sandra. While trying to get away, Will falls backward and through a hole in the floor landing in what he believes is the basement. With a badly sprained ankle, Will limps toward what he hopes will be the way out of the darkness, only to learn he is no longer anywhere near Normal.
Somehow Will has wound up in the distant future on a subtropical island off the coast of Antarctica where Brent, the last man on Earth, lives. While the most important thing for Will is getting back home to help Sandra escape from her captors, he must trust the reluctant hermit who knows a lot more about Sandra's abduction than Will is comfortable with.Homer Underby continues The Thuperman Trilogy as two budding superheroes must depend on each other to find answers.