Three families fight for their homes as they are overrun by vermin. In New Jersey, a dream home becomes a battleground as a family goes to war against an ever-growing number of bedbugs. A single mother defends her home and children against an invading army of rats. And in Arizona, a family discovers their new home is a haven for deadly scorpions.

Sometimes, the desire to get away from it all can bring us closer to nature than we ever planned. In Oregon, a woman is left dangerously ill after being bitten by one the thousands of hobo spiders that have taken up residence in her new home. A family in Idaho faces losing their home as a snake infestation spreads from the yard to the house. And a young family in Georgia discovers that their new home is built on top of a giant ant colony that stretches a thousand miles across the country.

Despite our best efforts, vermin will find a way into our homes. A family battles against an invasion of cockroaches, the walls and floors of their apartment seething with the creatures. An Australian town is threatened with extinction as millions of mice flood streets and fields, destroying everything in sight. And in Wisconsin, a family is hospitalized after the urine and excrement of invading raccoons poisons the air of their apartment building.

In Pennsylvania, three generations go to war against the tide of cockroaches spilling from a neighbor's home and into their own. In Kentucky, a young family move into a new home only to discover that it is overrun by a protected species of bat that cannot be disturbed. And in California, a single mother battles the growing number of filthy rodents running riot through her home.

In Tennessee, a farmer fights against a home invasion of deadly spiders. In Georgia, a family gets creative after several failed attempts to rid their home of bed bugs. And in Pittsburgh, a couple battle against the cockroaches in their neighborhood.

A family is terrorized by noises coming from the attic of their new home. A father of two fights for his life after being bitten twice by brown recluse spiders. And a family risk losing everything in a war against the ticks in their home.

A dream home becomes a nightmare when scorpions start falling from the rafters. In California, a family battle unusual blood-sucking parasites in search of new hosts. And a college students falls ill as she battles an army of opossums in her home.

In an exclusive gated community in California, a family is plagued by a ceaseless tide of rats entering their home from an unknown source. In Pennsylvania, a single mother is forced to move her family into a tent in the front yard when a bug infestation overruns their home. And in Texas, a terrified young boy is awoken by scratching sounds in his closet. His parents soon discover the source: dozens of opossums are living inside the walls of their apartment, and it's only a matter of time before they break out.

The owners of a summer camp battle a bed bug infestation that's plaguing campers. A young family fight their apartment management over a spreading roach infestation. And a woman's home is overwhelmed by an exploding rat population.

A family is forced to live in their RV when a protected species of bat moves into their attic. A dream home becomes a nightmare when the occupants discover an army of brown recluse spiders. And a couple tries to rid their home of foul-smelling crickets.

The five most horrifying stories from the first season of Infested. Spiders, rats, cockroaches, bats and snakes invade homes in vast numbers, terrorising their victims. Each family faces an agonizing decision: stay, or abandon their homes.

The five biggest, nastiest battles from the first season of Infested. Bedbugs, spiders, rats, ants and mice plague four families and one entire town in incredible numbers.

Potentially rabid bats keep coming back into a woman's home; a house is infested with snakes; an unknown menace threatens a family's safety.