I have literally the prefect fic for you. It is all of these and so much more. It engaging plotty and Epic.
THE SUM OF BOTH OF US by spicyshimmy Star Trek: Alternate Original Series (Movies)
Jim Kirk is nine when a massacre on Tarsus IV leaves him without a family and without a home. Spock is twelve when a strange boy in the desert saves his sehlat. Families aren't born; they're made. The look in mother’s eyes at his correction remained a mystery long after the colors of the night sky and the complex patterns of distant nebulae had become translatable by means of distinct and relatively straightforward equations.
Got one
Date: 2014-08-05 12:20 pm (UTC)THE SUM OF BOTH OF US by spicyshimmy
Star Trek: Alternate Original Series (Movies)
Jim Kirk is nine when a massacre on Tarsus IV leaves him without a family and without a home. Spock is twelve when a strange boy in the desert saves his sehlat. Families aren't born; they're made. The look in mother’s eyes at his correction remained a mystery long after the colors of the night sky and the complex patterns of distant nebulae had become translatable by means of distinct and relatively straightforward equations.
http://archiveofourown.org/works/883469/chapters/1701844