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Prompted by one of their number, who had previously indulged, five mature thirty-something couples, who had been friends for years and collectively known as 'the Group', decide to indulge in some novel partner swapping. At first everything appears fine and the couples believe that nothing has changed between them and that their relationships are safe. However, everything is not fine and petty jealousies start to arise, as some members perceive that others are benefiting more from the arrangement than themselves. The tensions mount and deeper, darker secrets begin to reveal themselves, especially when one member of the group changes her partner. Eventually, the tension and jealousy proves too much with catastrophic results for the marriages and friendship of the group.

How to Watch The Big Swap Legally and Safely

If you want to stream The Big Swap through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry The Big Swap films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.