Summary of our Thriller opening sequence

We find a girl abandonned in the middle of a deserted field, as she becomes conscious, confused about her whereabouts, the character begins to have various flashbacks of the previous night. As the flashbacks continue we see the character is at a party having a good time, until she gets assaulted by an anonymous person. The journey continues as she staggers off wondering what happened the night before, and who her assaulter was.