The movie 'Half Brothers' is purely fictional. The plot and characters were developed for entertainment purposes and not inspired by real events or people.
Perhaps one half - brother has had a more privileged upbringing while the other has faced hardships. As they get to know each other, they start to understand each other's perspectives and learn from one another. Or maybe there is a family secret that involves both of them and they have to work together to uncover it.
Another possible plot is that one half - brother has a very privileged life while the other has a difficult one. The less - privileged one might initially resent the other. But then, they find out that they both have their own insecurities and dreams. The story could then be about how they help each other achieve their dreams, with the more privileged one using his resources to assist the other, and in the process, they form a deep and meaningful bond that transcends their initial differences.
Well, without more context, it's difficult to give a detailed account of the 'half brothers true story'. However, generally, a story about half - brothers might involve themes like family secrets, divided loyalties, and the search for identity. For example, they might discover each other later in life and have to navigate a complex web of relationships within their family.