For Pippa (Sydney Sweeney), life is good. She and her boyfriend Thomas (Justice Smith) have just moved into a beautiful apartment with great views of Downtown Montreal... and the apartment across the street. What starts out as innocent curiosity soon turns into an all out obsession as they glimpse more and more of the glamorous and sexy lives of the couple who live there. But, after they witness their womanizing fashion photographer neighbor (Ben Hardy) cheating on his faithful partner Julia (Natasha Liu Bordizzo), Pippa and Thomas disagree as to whether they have a responsibility to act, or to simply mind their own business and stop looking. When one partner willingly continues to fall down the rabbit hole, it threatens to tear their lives apart, leading to deadly consequences.