Harry and Kate are completely different people.
Harry is 28, a professor at the University of Chicago, a bit closed off, and currently recovering from the death of his wife that took place the past autumn. Kate is 21, a transfer student, and dealing with life after being convicted of attempting to murder her previous boyfriend.
The two meet under odd circumstances and get off on the wrong foot upon their meeting. It doesn't take them long to look past that though and begin an unofficial physical relationship that inevitably does not remain under those terms. These two worlds come together unexpectedly and clash in the beginning. They eventually learn to deal with each other's rocky past though and find a way to be accepting of the person they both have become since those incidents.
Of course it's not quite that easy, though. This is a story of love, hate, and uncertainty all wrapped into one. Harry and Kate learn the hard way that you can run from your past, but you will never truly escape the darkness that shadows you.