In addition to their stay in Marion's childhood home, the film follows Jack and Marion as they travel through Venice and other European cities. Along the way, Jack becomes increasingly paranoid and irritable, struggling to communicate with locals and feeling alienated from Marion's laid-back attitude towards travel. Marion, meanwhile, seems unfazed by Jack's anxiety and is generally more interested in exploring her old haunts and rekindling connections with ex-lovers.
As the couple spends more time with Marion's eccentric family, tensions come to a head. Jack finds himself unable to handle their crude humor and frank discussions of sexuality, while Marion becomes frustrated with his narrow-mindedness. Throughout their interactions, the film explores themes of cultural differences, communication breakdowns, and the complexities of romantic relationships. With a sharp script, strong performances, and clever use of visual gags, 2 Days in Paris offers a fresh take on the classic "fish out of water" trope.