A Voyager away team discovers a symbol on a planet that Chakotay recognises.
This is a reasonably good episode with some interesting concepts.
I like how the story unfolds seamlessly between flashbacks and the present time period. This is down to good editing, transitions, and selection of a young actor who bares a plausible resemblance to what a young Chakotay would look like.
I think there are a few aspects you must overcome for it to be enjoyable. Firstly, of all the gin joints, in all the quadrants, in all the galaxy, Chakotay beams into this one. If you can accept this premise you are halfway there.
Secondly you need to get past the stereotypes. Compared to other representations I do not think this one is hideously bad, but it has problems, such as showing no distinction between indigenous groups and generalising all Native Americans as peaceful, respectful of the land, and heavily spiritual.
Naturally this culture could not have evolved without the help of the 'sky-spirits', which feels quite patronising. It is the type of concept seen before in Star Trek episodes like 'Who Mourns For Adonais' and 'Requiem For Mathusela', but 'Tattoo' does it slightly better.
When the crew on board Voyager gets into a bit of jeopardy towards the end, it feels a bit tacked on to increase the excitement level, but it's fairly well executed nonetheless.
The b-plot involving the Doctor contracting a holovirus is good fun and feels like a parody of the type of unsympathetic male who goes to pieces when given a dose of what the ladies call "man-flu" where I come from.
Roberts Beltran, Katie Mulgrew, and Robert Picardo stand out in this one.