The residents of Wilmington must evacuate as a tsunami approaches the coast; Laura searches for Rich, whom the military police arrested at the mysterious lab.
Rich and Laura go to see Lee for answers, and Lee winds up learning more than he ever would have expected.
Laura learns that a group of top scientists created the new species, and she searches for the corporation funding the research.
While hiding from Lee and his legion of secret agents, Laura has a bizarre Internet exchange with a person who claims to have information regarding the origin of the creatures.
Rich and Laura sneak out of the hospital with the footage of the creature before Lee and his men can catch them.
When Laura and Rich return to the surface from the ocean floor, they realize that the boat that took them out to sea is nowhere to be found.
As Laura and Rich explore the ocean in a submersible vehicle, they learn the unidentified species are laying thousands of eggs on the ocean floor.
Rich and Daughtery descend in a submersible vehicle and see the creatures spawning, but a system failure causes the craft to freefall into the ocean's depths.
Dr. Lee explains to his superiors that Cirko's death was necessary in the long run before revealing a clue in the investigation.
Cirko discerns the origin of the creatures while studying a sea orchid; when Laura returns home, she finds that her house has been ransacked by the government.
Animal control officers question good friends Miles and Phil, the keepers of Nimrod, when a neighbor's dog is reported missing.
When Daughtery and Jackson encounter one of the unidentified species at sea, Daughtery fires a GPS tracking device into it in an effort to track it.
Lee and Cirko begin to theorize that the unidentified species is causing global warming by digging beneath the ocean bed.
Miles tries to form a bond with the new species; Laura and Rich try to get onto Sullivan's Island to learn about the mysterious carcass that washed ashore.
A government scientist tries to keep secret the discovery of a sea creature by a young oceanographer.