Mitch's drive toward maturity and finding a career leads him to teaching. Unfortunately he needs to improve his maths and so heads back to school, where he quickly falls in with a bad crowd.

Mitch has decided it's time to get a career, and fancies training as a teacher. The problem is he doesn't have the grades to get into teacher training college, so has to go back to school to re-sit his maths exam.

Mitch finds himself in a classroom full of sixteen year olds, including bad-boy Chris who quickly leads him astray. It's up to Mitch's naively optimistic young teacher and his 'parents', Alice and Richie, to keep him on the straight and narrow, so that the student may yet become the teacher.