Who knows you well? Your best friend? Your boyfriend or girlfriend? A stranger you meet on a crazy night? No one, really?

Mark and Kate sit next to each other every day, but their paths outside of class never cross - until one night Kate spots Mark out in the city, miles away from home. Kate is lost, having just run away from a chance to meet the girl she has been in love with from afar. Mark is in love with his best friend, Ryan, who may or may not feel the same way.

Little do they know then how important they will become to each other - and how, in a very short time, they will know each other better than any of the people who are supposed to know them well.