"A Teacher" examines the complexities and consequences of an illegal relationship between a female teacher, Claire (Kate Mara) and her male high school student, Eric (Nick Robinson). Dissatisfied in their own lives, Claire and Eric discover an undeniable escape in each other, but their relationship accelerates faster than anticipated and the permanent damage becomes impossible to ignore.
Series premiere: Claire starts her first day teaching at a new school and meets her students, including Eric, a senior in her AP English class.