Emmy Ferguson is a 10 year old who learns that, after a long bout with leukemia, today is probably her last day on earth. Chris Ryan is a 35 year old drug addict who is determined to make this his last day. Adonna Frost, suffering from advanced breast cancer, has made a similar decision about the end of her life. As Emmy embarks on a strange journey, and as the day's events bring these three dying people together, their lives are changed forever.