Is this a angelic story splash..?

I am writing a story and i am wanting opinions on the sotry line of it. I dont know how popular it would be in todays time tho lol..

Its give or take a few a 7 year old boy (dont have a name for him yet) and his parents be killed when he was a baby. His Aunt take him in and she ends up marrying a man that owns a ranch, she dies of a bug but before she dies she gives the 7yr old a dispatch and tells him not to open it until he is a adult and she tell him to hide it. His Aunts husband (the boys uncle) is abusive to the boy and treats him really badly. The boys Uncle hires a man to waste someone so he can take thier land but the man he hires isnt who he thinks it is. This man pretends to be a assasian but is actcually trying to find the man that kill his parents. At the end the boy and this man find out they are brothers by reading the letter the boys Aunt left him.
This happen sometime in the 1800s.

I know its kinda cheesy but i like writing stories. I havent thought of any names for the charectors nonetheless either..
What do you think of this story line?
Answers:
I love it! It sounds very interesting, and unlike anything I enjoy ever seen. Nice job!
I really like it. It is a great plot for a full fledged murder-suspense novel! I merely think the 7 year old should be a little elder, because it is unrealistic for the child to have to assist the brother. Maybe the kid should be like 12?
the plot is kinda interesting.... it have a few perks but I am sure you can fix that! :D
It sounds similar to a lot of stories but beside a bit of a twist. Batman. Spiderman. Harry Potter. All of them have their parents die and end up living next to relatives or something of the sort.

It's also good when writing a story to research the history of the time period a little bit. You might want to research the history of Pinkertons detective/security agency and of the Mormons. I believe you could make a good western story about something resembling that if you knew a little bit about the history of both.


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