Worf's brother shows up, and apparently turns the Enterprise crew into immoral assholes. On the plus side, Paul Sorvino plays the brother, and Brian Markinson and Penny Johnson Jerald show up. But it's still awful. The TNG Rewatch goes "Homeward."
I lost considerable respect for Jean-Luc Picard as a character in this episode, as he spews tons of self-righteous twaddle in defense of making sure people die the way they were “supposed” to. The Picard of this episode is compassionless, heartless, and despicable. The point of the Prime Directive is to avoid imperialism, basically—to keep from contaminating two cultures (the ones being interfered with and the ones interfering). But the equivalency between that level of protection (and self-protection) and letting an entire culture die for no good reason that this episode postulates is appalling.