Underlay might get the quarantine he has requested when Russell discovers that escaped laboratory animals may be responsible for a deadly flu virus that has spread throughout Homestead.

One of Russell's fellow workers has been shot and killed by Underlay, and Russell questions the mysterious circumstances surrounding the shooting death.

After finding an old Cuban refugee who says he lost his family to "the lights," Russell goes fishing to catch one of the mysterious, orange luminescent beings.

A baby is abandoned at Russell's ranger station. Underlay locates the mother, Christina, but she vehemently denies that the child is hers.

Larkin learns that Russell has a criminal record and as a juvenile he was suspected of a double murder.

Russell finally confronts Mariel about the changes she's undergone since the hurricane.

After Tom is shot, he is taken to hospital to recover. While there, he starts to drift between the past and the present, meeting Mariel for the first time with Russell, but he is fully aware that he already loves Mariel, causing him some confusion during the experience.

Curiosity and frustration get the best of Kira as she searches for the truth about her father, Mariel and what is happening to the people of Homestead.

While reluctantly teaming up to catch two armed hybrids who are the run and extremely volatile, Russell and Underlay stumble upon several suspicious migrant workers who have been banished from the rest of their group.

Mariel finds Christine outside the hospital, and Christine forces Mariel to help her with the pregnancy. Mariel tries to contact her husband Tom now that Christine has been found. Also, school starts again, and the students are not all what they seem. Dave finds a boat key and gets Russell to take a trip with him into the lake, expecting to find something in the water, but only to find something much more suspicious...

Russell and Dave discover the island where former CIA operative Eli Szura has been housing special hybrids.

Russell discovers that his job may be in jeopardy because of his investigation of the hybrids.

As the storm rapidly approaches, Russell and Underlay try to uncover where Szura has hidden the hybrids.

Pandemonium ensues as the hybrids continue their roundup of the humans during the hurricane, while Underlay and Russell try to put together a rescue plan.