This verse is drawn from Star Trek III: The Movie at the moment when the Enterprise crew have just left the Genesis planet (if you have to ask, we can't explain.) They've stolen the Enterprise back from the Klingons and are trying to escape, but failing. So, they set the Enterprise for self-destruct and beam down to the planetso that when the Klingons come on to the ship, they find an empty vessel, then are immediately killed en masse. Nice.
This scene is significant only because it shows Kirk realizing that saving his friends is more important than saving the Enterprise. Well, actually, the scene is also kind of significant for the way-cool special effects of the Enterprise blowing up, but this is a story about filk music, so, as Lacanian theorists are fond of saying, the narrative must crush your head.