Balance of Power

The death of a celebrated Federation scientist leaves his estranged son holding a portfolio of dangerous inventions, and rather than honor his father's ideals he puts them up for sale to whichever power bids highest: Federation, Klingon, Romulan, or Cardassian. A stolen photon pulse cannon and Wesley Crusher's kidnapping by renegade Ferengi force Picard to keep the weapon out of the wrong hands before the auction decides the balance of an entire quadrant.