The Equation

He's very different from the usual math teachers. And he's never met a student like her... Kelly is 18 and doesn't understand math at all.

When she meets Tyler Evans, the substitute teacher, it's even worse: she focuses solely on her attraction to him, an attraction that borders on obsession...

What should have remained a teenage fantasy goes awry when an unpredictable variable enters the equation: Tyler himself. The 24-year-old, tattooed, cynical, and subversive, is nothing like a rigorous teacher with unwavering morals.

He likes to play with the rules rather than respect them... And Kelly, she wants to completely blow them up.

Between daring bets, indecent games, and formidable promises, the student and her teacher tread on slippery ground that defies all conventions.

But aren't the most difficult problems to solve also the most exciting?