Ben Healy is a good-natured guy working for his father, "Big Ben", a very successful, but tyrannical sporting goods dealer running for mayor. Although Ben has worked under his father's employ without so much as a raise or promotion in return, his father plans on handing over control of the company and ownership of the land to Japanese buyers rather than passing it on to his son, seeing his son as "too nice" to be his heir. Meanwhile, Ben and his social-climbing wife, Flo, have been unable to conceive, and visit a fertility doctor who tells them they are both infertile.
The worst child in the world makes an unthinkable discovery: there is another child even worse than he is--and it's a girl.
Junior Healy (Justin Chapman) tells a story from multiple drawings in a coloring book, and it switches to his classroom where he is told by Miss Hicks (Marianne Muellerleile) that he got an "F" for not finishing his science project, and he mentions that "it's all about sound waves", and the bell rings, causing a set of traps to trigger, and her to fall out a window. The audience is told that Murph (Eric Edwards), one of his classmates, told on him, and the principal called his dad, Ben (William Katt), prompting him to take him to get help. They meet Sarah Gray (Carolyn Lowery), a Therapy who tests him, and decides that he needs some activities to do, such as boy scouts, sports and ballroom dancing. He takes this harshly, and does not approve of these options.