As lead singer and keyboardist of a rock band, Craig (Craig Robinson) knows a thing or two about working the crowd. But his day job is where he really makes the grade. Every struggling artist knows the drill: you gotta pay the bills while you wait for that big break. So when Craig finds himself short on cash, he takes a job as a substitute teacher. It’s an easy gig, right? Throw a DVD in the player, dim the lights and sleep off last night’s party. But when he realizes that the kids think his class is an easy A, Craig’s inspired to inspire his students. Music is his passion and he’s not about to let anyone sleep though this period… period.