Sometimes, the world is too much for Mona Starr. She's sweet, geeky, and creative, but it's hard for her to make friends and connect with other people. SMona's struggle with depression takes on a vivid, concrete form. Mona calls it her Matter. The Matter gets everywhere, telling Mona she's not good enough, and that everyone around her wishes she would go away. But through therapy, art, writing, and the persistence of a few good friends, Mona starts to understand her Matter, and how she can turn their fears into strengths.