Main task synopsis

Girl is shown (in the past) reliving her last day, before she is involved in an accident. The accident is not shown, but hints however are mentioned. The girl's boyfriend is shown (in the present) obviously still mourning and visiting the girls grave. However, considering you do not know the girl died; you obviously don't know that it is her grave. - all adding to the enigma. The boy and girl are shown walking the same movements of the day, with slight differences. There are many links between the two characters.