A high school dropout with entrepreneurial ambitions, Teddy Walker, lives beyond his means to impress his successful girlfriend, Lisa, despite his job at a barbecue grill store. His life turns upside down when an accident at work leads to the store's destruction, which results in the loss of his job. Desperate for employment, Teddy finds a financial opportunity but discovers that it requires a high school diploma. Facing the reality that he never graduated, Teddy decides to pursue his General Equivalency Diploma (GED).

Teddy enrolls in a night school class at his former high school, where he encounters a group of misfit students and a no-nonsense teacher. Despite his charismatic personality, he quickly realizes that passing the GED will be harder than he thought. Struggling with learning disabilities that he's kept hidden, Teddy must now find a way to overcome his academic challenges and deal with the eclectic personalities of his classmates, all while under the strict supervision of the teacher who is determined to help him succeed.