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When a demented, doped up stranger finds his way into Wong Fei Hung's clinic, Po Chi Lam, with Captain Lu (Wei Xiaohuan) hot on his trail, the doctor and grandmaster begins to unveil – with the help of 13th Aunt (Wei Ni) – a conspiracy that involves an evil Gweilo experimenting on human beings to create a super-fighter serum. And that serum might be of use to Master Wu (Michael Tong), a newly-arrived martial arts master who has just opened a school and wants to supersede Wong Fei Hung as the best fighter in Canton province. While is obviously nowhere near the epic sweep of Tsui Hark's first two film in the franchise, it nevertheless surprises with the solidity of it production values, which are not much below Once Upon A Time in China 4 & 5, the two installments in which Zhao starred in 1993 and 1994.

How to Watch The Unity of Heroes Legally and Safely

If you want to stream The Unity of Heroes 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 Unity of Heroes 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.