Grave Crasher

Kat was killed by a drunk driver. She's in a lonely grave, longing for life. Preston's the drunk's son and would do anything to be able to apologize to Kat for his father's actions. He visits her grave often, and considers suicide until Kat finds a way to communicate and persuade him no to. Preston wants to be with her, but how can they be together if she is dead and he is alive. Could fate step in?