CDC researcher Abby Arcane investigates what seems to be a deadly swamp-born virus in a small town in Louisiana but she soon discovers that the swamp holds mystical and terrifying secrets. When unexplainable and chilling horrors emerge from the murky marsh, no one is safe.

A marine biologist, an insurance salesman and a teenage boy find their lives changed when a new and often dangerous sea life species emerges, while the government tries to keep the affair under wraps.

In Tree Hill, North Carolina two half brothers share a last name and nothing else. Brooding, blue-collar Lucas is a talented street-side basketball player, but his skills are appreciated only by his friends at the river court. Popular, affluent Nathan basks in the hero-worship of the town, as the star of his high school team. And both boys are the son of former college ball player Dan Scott whose long ago choice to abandon Lucas and his mother Karen, will haunt him long into his life with wife Deb and their son Nathan.

In Tree Hill, North Carolina two half brothers share a last name and nothing else. Brooding, blue-collar Lucas is a talented street-side basketball player, but his skills are appreciated only by his friends at the river court. Popular, affluent Nathan basks in the hero-worship of the town, as the star of his high school team. And both boys are the son of former college ball player Dan Scott whose long ago choice to abandon Lucas and his mother Karen, will haunt him long into his life with wife Deb and their son Nathan.

After a long search, lawyer Clarke MacGruder finally locates his long lost father Jack. At first, everything seems fine with his new extended family, until the two set off on a hunting trip, where Jack starts showing a rather violent streak to his nature.

Gabriel Higgs has failed to get into Johns Hopkins to study medicine. He's sixth on a list of backup candidates, and must persuade the five people ahead of him to drop out. Gabriel has a family tradition to live up to. Things don't go to plan.