+1 (also known as Plus One and Shadow Walkers) is a 2013 American science fiction horror film directed by Dennis Iliadis and starring Rhys Wakefield, Logan Miller, Ashley Hinshaw, and Natalie Hall. The film is about four college students, David, Jill, Teddy, and Allison, who attend a party. When the party is set back in time an hour into the past, there is a duplicate of every single person in the party doing what they were doing an hour ago. The plot revolves around the characters' unique actions.

Plot

While on the phone with his girlfriend Jill, who has moved away to attend college, David prompts her to explicitly wish that he were there to see her compete in a fencing tournament, only to surprise her with an unplanned visit. After the competition, David approaches Jill's similarly attired opponent from behind and flirts with her, thinking she is his girlfriend. Intrigued, she kisses David, and Jill storms off angrily after walking in on them. Later, David meets with his friend Teddy, a sex-obsessed student who tells him that Jill will attend a house party later. Hoping that she will speak with him in person, David attends the party, too.