The Journeyman Project series is the story of Gage Blackwood (Agent 5) of the Temporal Security Agency. The first two deal with conspiracies and trying to put history right. The third on the series, Legacy of Time deals with the lost histories of 3 mythical civilizations, and the ancient secret they held. The music is a good accompaniment to the puzzle solving and exploration style of this game. It's not a grand masterpiece, but it is pretty good nonetheless.