I was thinking something like The Martian where he got stranded on a planet during a mission, lost contact with the rest of his team and presumed dead, Spock is a vulcan scientist who was there on a research trip when he found jim's injured body and brought jim back to his ship despite vulcan's strict non-interference policy. Can be Mcspirk too with bones being jim's friend and a NASA scientist who refuses to believe jim is dead and tries to get a rescue mission to search for Jim despite everyone else thinking he's just griefing/in denial.