Past In Trouble

You are an employee at T.I.M.E (Temporal Institution for the Maintenance of Existence) an agency that is responsible for keeping the present alive by carrying out recoveries of people, animals or things that for some reason end up in another timeline putting the present in serious danger .  Your job is to recover items that end up in other eras and ensure that they have not caused any interference with the past which if changed could potentially destroy your present. But be careful because the past  is more dangerous than you think.