Some teachers just don't give an F. For example, there's Elizabeth (Cameron Diaz). She's foul-mouthed, ruthless, and inappropriate. She drinks, she gets high, and she can't wait to marry her meal ticket and get out of her bogus day job. When she's dumped by her fianc�, she sets her plan in motion to win over a rich, handsome substitute (Justin Timberlake) � competing for his affections with an overly energetic colleague, Amy (Lucy Punch). When Elizabeth also finds herself fighting off the advances of a sarcastic, irreverent gym teacher (Jason Segel), the consequences of her wild and outrageous schemes give her students, her coworkers, and even herself an education like no other.