Devon gets injured saving Garth from himself, and thus we learn that the Ark has a biosphere of medical personnel complete with space ambulance. Why we haven’t seen them in earlier episodes where someone’s been injured or fallen ill, like “The Alien Oro” or “Lazarus in the Mist” is never explained, but oh well.
And yes, they know all about the Ark being off course, but they haven’t done anything about it because they’re doctors, not engineers, Jim. Which is ludicrous because 1) plainly not all of them are, the space ambulance crew aren’t for a start, and 2) it’s been centuries, you’d think some of them could retrain in that time.
Anyway, the story rapidly degenerates into a sort of parody of a medical soap, as the Young Handsome Brilliant But Heartless Surgeon could save Devon but is too obsessed with a distress call from an alien spaceship to try, leaving Old Overlooked But Moral Surgeon to step up to the plate. Of course the two reconcile in order to save Devon *and* the aliens.
One of the highlights of the story is Bill Kemp as the space ambulance captain. Canadians of certain generations might remember him as one of the stalwarts of The Wayne And Shuster Comedy Show (if you don’t, here he is playing the Hockey Hall of Fame Chairman in “The Unholy Goalie”, and as the Postmaster General in the Question Time sketch), and, probably because of his background in comedy, he is able to deliver frankly ludicrous lines with absolute conviction. Also, there’s some colour-blind casting in the ambulance crew, which is nice.
One of the lowlights is the alien makeup. The alien spends most of the story hidden behind a digital effect, and the reveal is supposed to be a “twist”, but, given how bad it looks, they might as well not have bothered.