Four words can succiciently describe this episode; 1st Contact, Prewarp, Quest, Rescue. Ok thats five, but you catch my drift.
A filler episode in content and style, the episode's plot is just another revisit to this tried and trusted StarTrek device. The basic premise of crew visit pre-warp culture in disguise, lose equipment, go back for equipment, are discovered, captured and rescues is followed precisly here. There is little 'new' drama or action, though the final solution is very nicely done in terms of the Enterprise storyline and what has gone before.
If taken out a single entity, the episode is probably worth only a 6/6.5. We dont get to see anything really impressive of the pre-war, though trough dialogue mainly we can imagine what it is like. The representation of their militiristic governed civilisation is apparent however, through the various scenes of interaction with Malcolm and Archer. However, there are some saving graces for us Trekkies.... the reversal of the crews technological advantage when their equipment is used against them, turns Archer's strength into weakness - drums up the predicament. Tripp's and Travis' failed attempt at preparing a possible solution, also cranks up the little anxiety there is. The middle act though is interesting enough, especially the interrogation of Archer and Malcolm. As is the finale and the eventual rescue. Tripp's mishap also provides an element of merriment as well.
Overall, even though this is essentially a filler episode, it is a superior one. Just remember though, that nothing happens here affects the overall main plot arc. Maybe the planet and its warring civilisations will however, get a revisit in a latter season.
There is nothing here that will keep you rooted to your sofa or armchair, and nothing to get the heart really pounding. However, if you boldy go where me and a several million others have gone before, you will find an entertaining 45mins here.... just dont expect to much.