SolarmovieOne

Set in and around the remote tidal island of Amen, is the fictional story of three outsiders' battles against the twisted morals of an antiquated community. Inspired by British cult classics such as The Wicker Man and Hammer House of Horror, the film explores the fear of isolation and nature versus nature. A special birthday party becomes a living nightmare for City-dwelling couple Sadie and Rick and their friend Johnny. They visit Corinne, an enigmatic local on the island of Amen, which is accessible only by invite and seemingly impossible to get off. A mysterious family connection with Corinne brings horrific consequences as they find themselves trapped by the tide and at the mercy of the island's wild nature.

How to Watch Unhappy Birthday Legally and Safely

If you want to stream Unhappy Birthday 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 Unhappy Birthday 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.