Ninja are the ultimate power on Ninja Island. Long ago in the past their tranquil shores were invaded by mysterious beasts of legend that rose up from the depths to smash all of the extremely powerful and invincible Ninja cities. Many ninja were lost assassinating their most powerful foe, a gigantic laser spitting lizard named Gord'Zira. Eventually they sent many of the most beautiful ninja-geisha maidens to do um, battle, yes battle with Gord'Zira and afterwards he went to sleep and left the mighty Ninja alone forever afterwards.
Unfortunately there were unforseen side effects from the um, battle with the green and wicked beast. Soon many Ninja daddies were wondering why their ninja sons and daughters wore eyepatches and had peg-legs, and most disturbingly...green. The levels of divorce and domestic violence soared in those years in The Most Secret Ninja City, until it was decided by the Great-Aunt of Assassins that it would just be better if all the Ninjas that were so bothersome would suddenly be not Ninjas so that they could be killed, problem solved. The desparate children fled in a rickety galleon that some stupid people had left on Ninja island and fled during the night.
They found refuge on Monster Island, which is much like Ninja Island except tremendously unsafe thanks to the gigantic gorillas and flesh-eating parrots. Still they bravely made it home and even made friends with the tiny cannibals thanks to having extremely tasteless corpses. Still, many of the Dinopirates longed for home and had their chance! Monster Island's bigger-than-anything volcano exploded when a Dinopirate priest got a little drunk before a sacrifice and fell in, displeasing the volcano goddess, Stan'le. Hey, like I said, Dinopirates have extremely tasteless corpses.
The Dinopirates were without a home, until they remembered Ninja Island! Surely after a few hangings and keelhaulings their long lost families would welcome them back with open arms. Alas, the Ninja were a bit wary of being keelhauled because it sounded like something nasty that might happen in prison. Now the Dinopirates and the Ninja are locked forever into their eternal struggle- Dinopirates of Ninja Island!
Ok, that's all I've got just tossing something into the air.