When Pippa and Thomas move into their dream apartment, they notice that their windows look directly into the apartment opposite – inviting them to witness the volatile relationship of the attractive couple across the street. But what starts as a simple curiosity turns into full-blown obsession with increasingly dangerous consequences.

Lindsey Wilson first found love in the romantic city of Paris when she was a university student studying art there. Now, twenty years later, she is returning to the City of Light to take her daughter on an adventure there. With a little inspiration from the city's famed "love locks" on its scenic bridges, the adventure proves to be a journey of romance and rediscovery for the divorced Lindsey when she reconnects with her college flame in Paris and finds that her first love just might be the lasting love of her life after all.