thumb wars!

"Our protagonist adrift in the open seas, taking this time for thoughtful reflections on the awesomeness of travel, the significance of this vast expanse of wild blue yonder!
"When forsooth, the sun is mysteriously blocked as he finds himself in a strange glowy cave..."
"...more importantly the glow is advancing! and then a tiny something swats 'im--right in the eye! *fwap*!"
"What the crap? A tentacle? too late! There's a ton more all over the tiny home-engineered ship! They're clogging the motor--she's goin down!"
"Pulls out his homebrew weapon 'o choice and goes to town on one of them--easy prey! But wait--they are all clumping together....
KERRRRRZAP!! "
"A huge clump of them floors our dude and he's down for the count....water coming in...oh noes can't keep eyes open---hrrrrrrgggggggh *fade*"
"Wakes up to find himself in what looks like an aquarium with lots of big glowing water-tanks....full of those zapping bastards. Gingerly tries to pick one up--it's a way tinier, cuter version of the guys that beat the crap outta him earlier"
"What he's found is a domesticated cuttlefish, cephalopod champions of the reefs! Turns out that earlier he'd wandered into a deepwater cave on the deep ocean side of this chunk of islands, where he got attacked by some vicious electric squid (bastards!)
[eposition source, dialogue] nature lecture on the coolness of the cuttlefish: best camouflage in the ocean, one of the smartest ocean creatures, mutated on this small isolated reef to very social behavior due to small food sources...result = electric power source and easy domestication!"
"The limestone of the islands was eaten away by the ocean and formed a network of underground caves filled with electric sealife that form an electric power grid for the city (these shots could just be straight diagrams?)."
"That power is what brought you back! Cut to shot of him touching his chest, and finding a pacemaker/defibrillator cuttlefish stuck to his chest...tentacles embedded into his skin. Creepy."
"Well, my young man, Glad you're back in the land of the living...
The two travel down a dark hallway....it's a meticulously hollowed out rock cavern lighted by the soft glow of the moss which absorbs the sound of their footfalls. The camera examines them through a 'fisheye' camera perspective (*ZING!*) of the aquarium. At the end is a big cave with a hole at the top where the tide pushes in water."
"The floor is covered in shallow tide pools--breeding chambers for different strains of domesticated cuttlefish. Sort of like a chinese fishmarket, with all the colors and tags and shit, but with people meticulously charting out their growth over time instead."