When high school sweethearts Audrey and Jake share one last kiss before they break up, a spark sends them back in time to their very first kiss. Using their lips as a time machine, Audrey and Jake revisit their entire relationship one kiss at a time and begin to discover that their last kiss maybe shouldn't be their last one after all.

After a heart-wrenching breakup, Cammie reluctantly escapes to her brother's back to school party where she meets Ethan who attempts to cheer her up with a fantasy story that quickly takes on a life of its own.