Five people are unexpectedly drafted into the Earth Defense Force with a mission to persuade aliens not to invade Earth and return to their home planets upon trying.

When an alien from Gouda appears, Saneyoshi starts negotiating with him, but he must return to Earth; the alien eventually becomes angry.

Shinko and Mishima take a shift after losing at rock paper scissors; a ladybug-shaped alien from the Samba race appears.

Two Tarpas aliens try to invade Earth by landing in a reception room on a moonbase.

Luchini feels inspiration to write a piece of music and leaves Saneyoshi and Kaori alone on a shift; Kaori confesses to Saneyoshi that she likes him; a Gerbarba alien arrives.

An alien from the planet Lolalilas appears and wants to invade Earth for its water supply.