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Due to a mistake in heaven, an attorney, Yeon-Woo (Uhm Jung-Hwa), dies. Before she is able to return to her normal self, she must live as an ordinary housewife for a month. She begins her temporary new life with her new husband, Sung-Hwan (Song Seung-Heon) and daughter, Ha-Neul (Seo Shin-Ae).

How to Watch Wonderful Nightmare Legally and Safely

If you want to stream Wonderful Nightmare 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 Wonderful Nightmare 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.