All 17 year old Katie wants in her life is one thing, to be able to talk. What's stopping her? Aphasia, or how she explains it, Mutism. With no voice she feels as though she doesn't even have a life at all. The way she sees her life soon changes when a new student, 18 year old Zachary Myers, joins her Math class and shows her that there's more to her life than she really thinks. Although, Katie soon learns that this isn't her first encounter with Zack; they have met before during the worst event in both of their lives.