Serge, a young math teacher at an inner city high school, tries to get his students to solve an equation but is disturbed by a phone call. Smart aleck Karima is no whiz at math but comes up with a solution.

In this rousing short which draws on director Mathieu Hippeau’s own teaching experience, an ordinary math lesson erupts into emotional chaos. While the diverse young cast all command the rapid-fire dialogue with authentic ease, Sofia Lassoued uniquely impresses with her fiery yet thoughtful acting.