Laura and Jackson head out to sea where she ends up using a GPS device to track one of the creatures. Rich finds proof that the sinkholes in his visions are real causing him to continue obsessing over his brother's death. Meanwhile, Lee tries to talk Cirko out of telling the Pentagon that the new species should be considered extremely dangerous.

Jackson comes to Laura and Rich's aid after they find that Laura's home has been broken into. Miles gets in trouble with the law in his attempt to free Nimrod. And Lee discusses Cirko and the creatures with his superiors.

Jackson helps Laura and Rich build a submersible so that they can visit a site where the creatures spawn. Meanwhile, the Bennett's consider boot camp as a way to discipline Miles.

Rich and Laura try to get the footage of their trip to the ocean bottom to a news station before Lee can stop them. Meanwhile, Miles must watch as doctors prepare Nim for an autopsy.