while the 'bermuda triangle of space' theme was somewhat fanciful, "the resulting cooperation between the klingons and the "enterprise" is adeptly done." the depiction of a number of existing federation races representing the lost "andorians, tellarites, vulcans, orions and even the plant creatures from 'the infinite vulcan' is a nice touch." however, an overreliance of voice work on nichelle nichols and james doohan, rather than john colicos as the klingon kor, is less effective. there is a positive message delivered here with kirk and his crew working peacefully with the klingons until the latter "predictably attempt to sabotage the "enterprise"."