The main plot is about 'ideological organization' called Across, that tries to conquer the world and Municipal Defence Force that tries to protect their Prefecture, because they look at 'narrow' picture instead of a big picture. Across plans are often crazy and that gets plenty of opportunities for jokes and other humor.
However they are not the only stars of the show. There are plenty of subplots and other characters that creative and ingenious in their own way, like Pedro and Will of the Macrocosm, who controls the entire show but otherwise is very emotional woman, desperate to find love.
There is also directors self insert character Nabeshin and well as manga author Rukido Kouji, who argue about the direction of the show.
It has overreaching plot that connects it all, but most episodes can be readily consumed in standalone fashion. Each episode has some sort of theme that Nabeshin makes Rukido approve at the beginning.
Overall I can recommend it to fans of Gintama and Nichijou as well as to all who likes comedy (not romantic comedy, just comedy).
