Meanwhile, back in orbit, Scotty notices a Klingon ship approaching and must warp out of orbit to escape detection. Bones cures the native king who is suffering from the flu, and as a reward the landing party is set free and given all of the light bulbs they can carry. Scotty cripples the Klingon ship and warps back to the planet just in time to beam up Kirk et. The new bulb is inserted, and the Enterprise continues with its five year mission. A light blub in the bridge dies.
Someone remove the lightbulb.
In the Conference room. Let me dispose of it. Shut up, Data. Hold your fire, Mr. Worf. I'm afraid we're out of light bulbs.