Calvin Penney has spent years living beside the same water that may have taken something from him.
His father died under mysterious circumstances decades earlier.
The questions never completely disappeared.
Now something has emerged from the sea around his Newfoundland hometown, and Calvin may finally be forced to confront both the danger beneath the water and the history he has been carrying above it.
That is the setup for Below, Netflix's six-episode thriller starring Josh Hartnett.
At first glance, this looks like a creature story.
A coastal town is threatened.
People become afraid.
Something unknown is moving in the water.
But the creature is only part of what makes the premise interesting.
The other half is Calvin himself: a father trying to protect a fractured family while his community faces a threat capable of destroying much more than boats and buildings.
What Is Below About?
Calvin Penney is a fisherman living in a small Newfoundland community.
Netflix describes him as big-hearted but stubborn, a man still haunted by the mysterious death of his father many years earlier.
Then an unidentified sea creature begins attacking his hometown.
The danger forces Calvin into a position he cannot avoid.
He must protect his children.
He must help hold together a frightened community.
And he may have to uncover secrets connected to the island itself.
Calvin eventually teams up with visiting marine researcher Fonda Howander, played by Mackenzie Davis, as they attempt to understand and confront whatever is threatening the coast.
The series combines that mystery with local folklore, family tension and the pressure facing a community whose traditional way of life is already disappearing.
Calvin Is Fighting on Two Fronts
A monster is frightening enough.
A monster arriving when your family is already struggling is worse.
Netflix identifies Calvin as a single father of three who is desperate to keep his fractured family together.
That detail changes the shape of the story.
Calvin is not simply the local hero who discovers a creature and decides to hunt it.
He already has problems before the creature appears.
His past is unresolved.
His family is under strain.
He feels disconnected from the community around him.
Then an external threat arrives and makes every existing weakness more dangerous.
His son Wade Penney, played by Charlie Heaton, becomes particularly important.
Calvin's fight is therefore not abstract.
If he fails, the people at risk include his own children.
What Happened to Calvin’s Father?
For now, this is one of the questions the series is wisely leaving unanswered.
Netflix confirms that Calvin's father died mysteriously decades earlier.
The new creature threat forces Calvin back toward those old questions.
Whether the two mysteries are connected has not been revealed, and that uncertainty should remain intact before the series premieres.
But narratively, the connection is important even if the events eventually prove unrelated.
Calvin is a man who never received complete answers about something that shaped his life.
Now he faces another mystery emerging from the same environment.
The sea therefore represents more than immediate danger.
It contains uncertainty.
It contains memory.
And, possibly, it contains answers Calvin has spent years without.
What Is the Creature in Below?
Netflix has deliberately described it only as an unidentified sea creature.
That is exactly how it should remain before release.
Showing too much of a creature can reduce suspense.
The fear is strongest while the characters are still trying to understand the rules of the danger around them.
How large is it?
Why has it appeared?
Is it attacking randomly?
Is something disturbing its environment?
Has it been there before?
And does anyone in the community know more than they are willing to admit?
Those are more useful questions than immediately giving the creature a name.
The official trailer also appears designed around that uncertainty, including destruction and strange events around the water without explaining everything underneath them.
Fonda Howander Brings Science Into the Mystery
Mackenzie Davis plays visiting marine researcher Fonda Howander.
Her presence creates a natural contrast with the community.
People who have spent their entire lives around the Newfoundland coast may understand the water through experience, stories and local history.
Fonda arrives with scientific training.
A strong version of this story does not need to make one side foolish so the other can be correct.
Local knowledge and scientific investigation can reveal different parts of the same mystery.
Calvin needs answers quickly.
Fonda may be the person capable of helping him separate fear from evidence.
But the deeper they investigate, the more likely they are to uncover information that changes what the town believes about the threat.
Newfoundland Is More Than a Background
One of the strongest choices behind Below may be its setting.
Creator Jesse McKeown has spoken about wanting to build a large-scale story around Newfoundland because of the region's rugged landscape, isolation and distinctive communities.
That setting gives the series an identity that a more generic coastal location might not have.
For a fishing community, the sea is not simply scenery.
It is work.
It is food.
It is history.
It is danger.
It can determine whether families remain in the place they have always known or are eventually forced to leave.
That means the creature threatens more than human lives.
If people become afraid of the water, the town itself begins to change.
The Town Is Already Fighting to Survive
Netflix describes the community's way of life as vanishing.
That detail gives the creature plot another layer.
A town already facing economic or social change does not have unlimited resources for another crisis.
People may disagree about what to do.
Some may want to leave.
Others may refuse.
Some may believe Calvin.
Others may think fear is making people irrational.
And when livelihoods depend on the same water everyone is suddenly afraid of, even sensible choices become difficult.
Stopping the creature may therefore be only part of the conflict.
Calvin also has to convince people that there is still something worth protecting.
Who Is in the Below Cast?
Josh Hartnett leads the series as Calvin Penney.
He is joined by:
Mackenzie Davis as Fonda Howander
Charlie Heaton as Wade Penney
Willow Kean as Ruth Penney
Ruby Stokes as Mary Penney
Rohan Campbell as Jay Penney
Kaleb Horn as Noah
The series was created by Jesse McKeown.
Karen Walton, Perry Chafe and Natty Zavitz are also credited as writers, with Jamie Childs, Helen Shaver and Stephen Dunn directing episodes.
Below Is a Creature Thriller With a Family Story Underneath
The easiest version of this concept would simply move from one creature attack to another.
But the official premise points toward something more character-driven.
Calvin's real fear is not only dying.
It is losing his family.
He is already struggling to keep them together before the larger threat arrives.
That means every dangerous decision he makes can have two consequences.
He might physically endanger them.
Or he might push them further away while trying to protect them.
Those are very different forms of loss.
A thriller becomes more effective when the characters have something emotionally specific to lose, and Calvin appears to have plenty.
When Is Below Coming to Netflix?
Netflix has confirmed that all six episodes of Below arrive on October 8, 2026.
That means viewers will be able to watch the complete mystery without waiting weekly to discover what is hiding beneath the Newfoundland coast.
Who Should Watch Below?
This looks especially suitable for viewers who enjoy:
Creature thrillers
Coastal mysteries
Family dramas with suspense
Isolated-community stories
Maritime folklore
Josh Hartnett
Mackenzie Davis
Limited series that can be binged in one run
Anyone interested only in constant monster action may want to adjust expectations.
The family and community drama appears to be just as important as whatever is lurking underwater.
Flicklevel Outlook
The creature will probably attract people to Below, but Calvin Penney may be the reason they stay.
There is something stronger about putting an extraordinary threat into the life of someone already struggling with ordinary problems.
Calvin has a damaged family.
An unresolved past.
A community changing around him.
Then the sea gives him one more problem — except this one may be capable of killing the people he is desperately trying to hold onto.
The smartest choice the series can make is to keep the creature mysterious for as long as possible while making Calvin's personal stakes increasingly clear.
Because the most interesting question is not simply:
What is beneath the water?
It is also:
What will Calvin lose before he finds out?
Spoiler note: This story preview is based strictly on the official premise and trailer information. The creature's identity, the truth surrounding Calvin's father and the island's buried secrets remain unrevealed.
Official Source: Netflix Tudum