When philosophy scholar Jack Griffin loses out on his dream job and goes to work as a high school Advanced Placement Biology teacher, he makes one thing very clear: he will not be teaching biology. Realizing he has a room full of honor roll students at his disposal, Jack uses his flawed logic to misdirect his principal and recruit the kids to help him mentally break his job-stealing nemesis and win back the position that's rightfully his.
Jack Griffin is a Harvard philosophy scholar who loses out on his dream job and goes to work as a high school Advanced Placement biology teacher in his hometown of Toledo, Ohio. He quickly makes it clear he will not be teaching any biology, however, and, realizing he has a room full of overachieving honor roll students at his disposal, decides instead to use the kids to enact revenge on his rival and take the job that is rightfully his. Eager to prove that he is still king of the castle, Principal Durbin struggles to control the force of nature that is Jack Griffin.
When Jack leaves his class unattended, a student injury sets off an official investigation and lands Jack in "teacher jail." An aggressive teacher's union rep sets her sights on Principal Durbin. The students' excitement for a substitute teacher are dashed when they find out it's Helen.
Jack reluctantly agrees to go out on the town with Mary, Stef and Michelle. However, his superiority complex proves difficult for the women of Toledo to overcome. Principal Durbin feels threatened when Helen fills in for him on the school's video morning announcements.
When Jack is attracted to a student's mother at a parent-teacher conference, he feigns interest in her son, Colin. A group of parents complain to Principal Durbin when they notice a piece of controversial student art from Mary's class.
Jack receives an offer from Miles' publisher to write a book of feel-good philosophy that could be his ticket out of Toledo. Durbin accidentally sets off an emotional firestorm when he reveals that while Stef chose Mary as her emergency contact, Mary chose Michelle.