The movie is about the hunt for two enormous prehistoric sea creatures causing mayhem and carnage on the California coast: Mega Shark vs Giant Octopus as they battle each other for supremacy of the sea.
Mega Shark vs. Giant Octopus (2009)

The movie is about the hunt for two enormous prehistoric sea creatures causing mayhem and carnage on the California coast: Mega Shark vs Giant Octopus as they battle each other for supremacy of the sea.
A pair of college students soaking up the fun and sun in Sin City over spring break when horrific weather descends and soon the Strip is being torn to shreds. They learn that this is happening because of an ancient curse, and must work with a singer in order to stop the supernatural disaster.
Filled with smoke and fire, the sky is littered with ships hovering above for miles in every direction. These ships reap the Earth of all its resources, while drones patrol the now ruined cities.