Prompt as follows : Titan AE - Johnlock
prompted by anonymous on tumblr :)
The first thing that goes through Sherlock's mind when he hears of the Titan project is that it would be an amazing thing to use to recreate a planet that would be able to host all the surviving humans. What he doesn't understand is the visible discrimination other alien species have against them, as they are all equally evolved (or so he thinks).
It only hits him when John comes home from a repair job on one of the Io's satellites and tells him about the rumors going around of destroying said Titan. Of course, Sherlock simply shrugs, acting like he didn't care about it and acting like Mycroft hadn't asked him to help locate the device. But, John soon lets Sherlock in on a little secret: Cale has been through here, and he was wearing a strange ring. Unlike the wedding rings both him and Sherlock wore, he said it had a more personal attachment, but refused to say why. John had overheard some arguments between a crew and some other people.
Sherlock waved the argument away, but left John with no notice, as he called Mycroft to tell him that Cale had been sighted. His elder brother, one of the ruling members of the surviving human race thanked him, and told him to try and get John to forget all about it. That, of course, would be more difficult, as John had been quite intent on figuring out who this Cale was. Maybe a cognitive recalibration would be in order, just like when Sherlock had to disappear and asked Molly to get John to lock his m