Retief's Ransom

Lumbaga is a planet without known virtues - but with some decidedly odd natives. For every Lumbagan is simply an arbitrary assortment of semi-independent organs inspired by a lust for mayhem.

But even the most undesirable chunk of galactic real estate attracts its quota of rival overlords, and the fiendish Groaci had a scheme for absorbing Lumbaga into their sphere of influence. It was working well...