"The Ultimate Legacy" is the last movie of the Ultimate trilogy. The movie is OK, but not as good as the original. It is a Hallmark-quality movie, definitely not a blockbuster.
In order to understand everything that's going on you will need to watch "The Ultimate Gift" and "The Ultimate Life" before this movie, possibly more than once. If you haven't seen the prequels you will be missing a lot of information about the characters and may be confused when people, places, events, and concepts from the first two movies are mentioned. For this reason "The Ultimate Legacy" does not work well as a standalone film. Each film in the trilogy is missing some information that can be found only by watching all of them.
In order to understand everything that's going on you will need to watch "The Ultimate Gift" and "The Ultimate Life" before this movie, possibly more than once. If you haven't seen the prequels you will be missing a lot of information about the characters and may be confused when people, places, events, and concepts from the first two movies are mentioned. For this reason "The Ultimate Legacy" does not work well as a standalone film. Each film in the trilogy is missing some information that can be found only by watching all of them.