Patalliro! Stardust Keikaku takes place in a society largely resembling our own, with one defining twist. The story is adapted from a manga popular among adolescent Japanese girls, featuring a healthy mix of gay men and beautiful teenage boys (bishounen). The action centers on Marinera, a land of eternal spring located somewhere in the South Seas. Marinera is a major diamond producer, and its most prolific mine is owned by the vertically challenged, horizontally endowed boy‑king Patarillo himself. The ensuing conflict revolves around these diamond resources and the International Diamond Syndicate, a large semi‑criminal organization.