People didn't much notice my disappearance during the last mission and no one thought to do any medical scans after I was returned. This sets the stage for the weekend mission.
The Captain had something put into him, likely nanites, that have imprinted a desire to go someplace. In this instance, a space station. I have rewritten this scenario a few times to make it work better in terms of our overall goals. More will have to be added, but so far it was an almost extinct species that was being kept prisoner that sent the call... at least that's what is in my plans...