Dear Sister

Olive and Alexandra vowed to be best friends forever-after all, they were twins who did everything together. How could they break that promise? However, when their father passes away, leaving Olive and Alexandra in a deep state of heartbreak and grief, the two sisters turn against each other to the point where they can hardly stand the sight of one another. Neither sister wanted to see the other again after high school; they didn't even attend each other's weddings.

And then Alexandra dies in a car accident.

All Olive wants is to turn back time, repair her relationship with her sister, and experience the things they never got to do together. Years later, after visiting her sister's grave, Olive is involved in a car accident that sends her back in time, just two months before their father's death.