They took it to Africa and placed it in a wildlife sanctuary to live free and die. About a year later they went to see their old pet. They were told she would not remember them and that approaching it would be dangerous.
Choosing not to heed the warning the brothers trekked into the preserve to find their now fully grown adult lion. This amateur film captured the "reunion". Even though there is no sound, poor picture quality and shot by someone with no camera experience, the intensity of the encounter is still apparent.
You will not find this on YouTube, so if you're not up to it don't play this movie.