In Catwalk, one of the more story-driven episodes of Enterprise's second season, the entire crew finds itself accompanying a small crew from an alien ship into one of Engineering's heavily shielded catwalks above the warpcore to ride out a radioactive storm which would - apparently - kill them all if they were directly exposed. Soon enough, aliens from the same species infiltrate the radiation-exposed portions of the ship.
Bottom-line: Archer and the crew must figure out a way to regain control of their ship.
Essentially, this is a subtle recycle of one of TOS' best episodes and a plot that was used in Voyager at least twice. Could have been much more interesting as a two-part arc. Why the first crew of aliens would be seeking protection from a storm which poses no threat to them is not examined, and it is not explained why Archer remains so trusting after having had problems with virtually every alien species he has encountered thus far (are we supposed to simply believe that the entire federation was completely naive before Kirk and Spock?)
Bottom-line: Archer and the crew must figure out a way to regain control of their ship.
Essentially, this is a subtle recycle of one of TOS' best episodes and a plot that was used in Voyager at least twice. Could have been much more interesting as a two-part arc. Why the first crew of aliens would be seeking protection from a storm which poses no threat to them is not examined, and it is not explained why Archer remains so trusting after having had problems with virtually every alien species he has encountered thus far (are we supposed to simply believe that the entire federation was completely naive before Kirk and Spock?)