Sebastian's father is killed by the boy's mother and her lover. Sebastian seems to forget all that, but is reminded about it when he re-connects with his sister Isabella and his childhood friend Rafael. Revenge is forthcoming. The film is a retelling of an ancient greek tragedy about matricide. I liked the music, the 3-story set, and the action - and of course the ending where Sebastian's mother and her boyfriend get their due. Check out my list: https://trakt.tv/users/jeffsmith99/lists/spaghetti-westerns-i-want-to-watch Look for "Gunman of Ave Maria" on Prime Video. Its not free, but when I checked, it rented for $1.99