潜艇总动员8：地心游记

The research submarine "Comma" is a die-hard fan of the science fiction novel "Journey to the Center of the Earth." In order to study mysterious substances deep in the ocean, it follows the geologist uncle aboard the "Iron Stone" to dive into the Mariana Trench. Unexpectedly, they are swept into a labyrinth of caves and arrive in a vast unknown world, where they discover ancient creatures, embarking on an unimaginable undersea journey to the center of the Earth.