The Enterprise must protect a very important shipment of grain from both Klingons and some adorable creatures called tribbles.
Quest roles:
Frank da Vinci(Lt. Clifford Brent), Eddie Paskey(Lieutenant Leslie (uncredited)), David L. Ross(Galloway), William Campbell(Captain Koloth), Stanley Adams(Cyrano Jones), Whit Bissell(Lurry), Michael Pataki(Korax), Charlie Brill(Arne Darvin), William Schallert(Nilz Baris), Ed Reimers(Admiral Fitzpatrick)