The school year is coming to an end and high school freshman Zak Dale wants a summer job to earn some money. His fish-eyed science teacher, Dr. Cyrus B. Fletcher, has a job opening but wants Zak to clean the science classroom, improve his grades, and deliver an award-winning speech to get it. As Zak tries to prove he's the best person for the summer job, he helps his best friend Miles search for the holy grail of junk food, falls in love with the beautiful and mysterious Mia Holmes, locates his missing grandmother, neglects his bladder-challenged dachshund, and takes a journey through the American Revolution with Darius Brown, his substitute history teacher.