Stardate: 4523.3 -- The Enterprise goes to Deep Space Station K7 responding to a distress call. After reaching the station, Kirk finds out the distress call to be unwarranted and the Klingons have come there looking for some shore leave. Kirk must maintain order as the Federation and Klingon tension is high. That and the fact that the station and the Enterprise are being overrun by small furry animals known as tribbles.

original airdate--December 29, 1967  Remastered date-- November 4, 2006

music:Theme song  written by Alexander Courage

Goof--Chekov's drink repeatedly changes hands between shots.

Trivia--This episode nominated for a Hugo Award for Best Dramatic Presentation at the 1968 Science Fiction Convention.

Space: the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before.