In the near future, an aging crime lord recruits young delinquent Alex to steal a locked-up serum designed to fight a mysterious STD. When Alex falls for his boss's girlfriend, Mauvais Sang becomes something rarer: an ecstatic depiction of what it feels like to be young, restless and madly in love. With its balletic gestures and bold primary colors, much of the film plays as if through the eyes of its lovesick protagonist. And it hinges on one of the most thrilling scenes in modern movies: Alex sprinting and cartwheeling through the Parisian night to David Bowie's "Modern Love," a bundle of desires set briefly and wildly free.