Tessa has been diagnosed with leukemia, and doesn't have much longer to live. So, to take advantage of the time she has left, she makes a list of all the things she wants to do before she dies. Enlisting the help of her friend, Zoey, Tessa tries things she's never dreamed of doing before, like breaking the law and trying drugs. But as her leukemia progresses, Tessa things about the more important things in life. She helps her parents get back together and she falls in love for the first time and she really begins to appreciate the everyday things in life.