The plot is set partly in a near future in which artificial intelligence is in control of everyone's lives and human emotions are perceived as a threat.

As adults, best friends Julien and Sophie continue the odd game they started as children -- a fearless competition to outdo one another with daring and outrageous stunts. While they often act out to relieve one another's pain, their game might be a way to avoid the fact that they are truly meant for one another.