Paige Collins (Rachel McAdams) and her husband Leo (Channing Tatum) come out of a movie theater. On their way home, at a stop sign, Paige unbuckles her seatbelt to lean over and kiss Leo. At that very moment, a truck rams their car from behind and Paige crashes through the windshield. Both of them are rushed to the emergency room, and as Leo, in a voice-over talks about how "moments of impact help in finding who we are" the movie cuts to how Paige and Leo first met. The scenes of how they courted, became engaged and married at the Art Institute of Chicago and share a kiss under the Cloud Gate are interwoven with the present.