What would you say if the world were ending in a few hours? As an asteroid speeds toward Earth, three high school students race against time to confess the truths they've long buried - a girl ready to risk her heart, a son afraid to reveal who he is, and a boy hiding a life-altering secret. But as emotions collide and relationships unravel, their "last words" may change everything - if they're brave enough to say them before time runs out.