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.

When Paul's girlfriend breaks up with him on the last day of high school, he finds himself heartbroken in more ways than one.