What's The Story?

I've not been getting much sleep lately. I keep having this niggling of a story idea in the back of my head. It must be a new one that's not quite ready to show itself just yet... I can tell you it's going to drive me nuts until it does... But here the gist of what I have so far.

→ There's this guy. I think he might be a soldier, because he seems to be away from home a lot and people are afraid of him... but he has two kids (not sure on ages yet). 

→ I don't know what happened to his wife, but she is no longer in the picture... she may have died, or she may have run off with someone else.

→ The guy is due to come home again and the adults in the house all take off this is mainly the sister and her friends. One of the sisters friends turns up late for the party/gathering after everyone else has taken off and the Nanny/house keeper quits.

→ This friend finds himself stuck at the house looking after the two kids... the sister refuses to come back and the guy gets delayed for some reason... they friend is supposed to hire a new nanny, but instead takes the job himself, as he can do his day job from anywhere.

→ This friend finds he likes the kids and they aren't the pains in the arse everyone made them out to be. I want to say he's there for almost a year looking after them before the guy finally makes it home for good.

→ The kids don't want the friend to leave because they don't know how to relate to the dad who also doesn't know how to relate to them either so the friend is like a barrier/buffer for them. The friend is also the bridge between the guy and the rest of his family.

→ When some crazy shit follows the guy home from the war they have to band together to keep their world and new found family from falling apart. Through the ups and down they have to learn to rely on each other and the kids for the world to make sense again.

Does that sound like a good story?