Chloe's dream trip hits a snag when she sprains her ankle, and her ex, Matt, swoops in as her self-appointed nursemaid. He's adamant about rekindling their extinguished fire from six years ago, but her heart is as rigid as the Eiffel Tower.
Meanwhile, Samantha aims to restore the group's friendships as Beau enchants her into thinking about something more by using his irresistible charm and bad movie quotes.

Despite typical antics and screwups, things take a turn when Chloe's photographs and a mysterious thumb drive bring the group into a criminal conspiracy. Suddenly, they're dodging thugs, foiling schemes, and outsmarting crooked gendarmes in zany misadventures. This street-smart foursome must protect each other as they rename the City of Light as the City of Love.