Ready to start streamingThe 21-Day Theory from the comfort of your couch? The 21-Day Theory is currently available to stream via subscription, rental, or purchase on in the US.
Here are a few key details about the Viu series. Originally premiering January 17th, 2025, "The 21-Day Theory" stars Narikun Ketprapakorn, Supakorn Saokhor, Pataraphol Wanlopsiri, Dom Haetrakul. The show spans 1 season(s) and currently holds a 90/100 rating on TMDb, which comes from reviews from 1 active users.
Wondering what the series is about? Here’s the plot: "Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations."
