To repay Ruth Quimby's parents, Sean York breaks up with his girlfriend of seven years, Celine Scott. Soon after, Celine loses her parents in a tragic car accident and is diagnosed with leukemia. She gives up treatment and opts for euthanasia instead. Days before her death, she runs into Sean and Ruth. The latter invites Celine to help choose her wedding dress and even asks her to be the bridesmaid, unaware that the wedding and her euthanasia fall on the same day.
