Project Almanac

Project Almanac formerly titled Cinema One, Almanac, and Welcome to Yesterday is a 2015 American found footage science fiction thriller film directed by Dean Israelite and written by Jason Harry Pagan and Andrew Deutschman. Filmed in 2013 and originally planned for an early 2014 release, the release date was later moved to January 30, 2015.

David, Jessie, Christina, Adam, and Quinn eventually travel back in time to the day before and break into Quinns house, where they draw a smiley face on the back of the neck of a sleeping past Quinn which simultaneously appears on the back of the visiting Quinns neck. However, he awakens and seeing his future self causes a feedback loop that nearly erases them both from the timeline. The five agree to use the machine for personal gain on the condition that they always use it together. Adam uses it to win the lottery, Christina gets back at her bullies, Quinn aces a chemistry test to secure his academic future, and the group eventually decides to travel back to Lollapalooza three months before. David hesitates to declare his feelings for Jessie and their relationship becomes awkward. David is disappointed by this and decides to travel back in time alone to change that, leading to a future in which they are a couple. When he returns, he finds that the blackout caused by them sending the toy car back resulted in their schools star basketball player getting hit by a car and breaking his leg the team doesnt make it to the championships, and those that would have attended go elsewhere, including a pilot who ends up crashing a commercial airliner along with multiple other catastrophes around the world. David goes back alone once again and prevents the accident that would lead to the players injury, and averts the plane crash. He returns to the future to learn that instead Adam is in critical condition in the hospital after being run over.David continues to travel back in time to rectify the poor outcomes, but eventually is caught by Jessie during one of his trips back in time. Jessie confronts David, who is forced to admit to using the time machine to win her affection. As Jessie lambasts David for his deception, her past self runs up and Jessie is erased from the timeline after seeing her past self. David decides to go back to prevent the machine from being created, but

Source: Wikipedia