Undo
Scroll through a series of scenes showing every day life. Closer shots show they are actually running backwards. Over time, we see that these are all mistakes that people make (spilling coffee, breaking tables, etc) that are fixed by going backwards in time.
Eventually we come to the scene of a car accident with a car pinning a helpless victim to a tree. The scene running backwards, however, does not solve the issue. The car pulls away and the victim slides to the ground. The car is intact - in fact, it's brand new - but the person is still dead.