Of all the regulars on "Star Trek: Enterprise", the least interesting and least developed was Ensign Mayweather. Too often, he was little more than a pair of hands manning the ship. Fortunately, in this one he gets to have more of a chance to be noticed and be multidimensional.
The episode concerns Mayweather going on leave. However, unlike most of the crew who'd head back to Earth, his home has always been in space aboard a freighter before coming to Starfleet. Sadly, however, his father recently died and difficulties with him and his family adjusting to this and his being in Starfleet make up the episode. The biggest of these adjustments is Mayweather's younger brother taking command of the freighter. Can the family work out their issues?
The best thing about this show, by far, is a casual reference to the original "Star Trek" episode "A Piece of the Action". On the bookshelf in Mayweather's room is a white book entitled "Chicago Gangs of the Twentieth Century"--and it's the same book and same ship (the Horizon) that led to a planet being contaminated and becoming a planet that emulated the gangsters!! A clever reference an an otherwise enjoyable show.