Devin wants to graduate number one in his class. Mac has no desire to graduate at all.

Valedictorian hopeful Devin Overstreet (Wiz Khalifa) struggles to pen his graduation speech when it becomes clear that all his academic overachievements have left him with little to no real-life experiences. He finds an unlikely inspiration in the lowest achiever on campus, Mac Johnson (Snoop Dogg). Mac, a 15-year senior and consummate ladies man, is smitten by the schools new substitute chemistry teacher. He soon realises that the only way hell truly have a chance with her is if he finally graduates high school. In 3 weeks time, Mac must cram four years of high school academics, while Devin must cram four years of teenage experience.