Day One
“The future is offline. Your survival starts now.”
We checked 8 streaming services in India on 04 Jun 2026 at 06:19 IST
About
Barcelona, 2026. During Mobile World Congress week, Ulises Albet, a former tech prodigy turned anti-tech activist, becomes the prime suspect in a murder. As he escapes through a city under lockdown, he uncovers the imminent launch of a groundbreaking technology that could put humanity's ethical future at risk. To stop it, he must confront his past.
Cast
Álex González
as Ulises Albet
Asier Etxeandia
as Samuel Barrera
Alba Planas
as Rebeca
Jordi Mollà
as Diskin
Renata Notni
as
Ivan Massagué
as
Mireia Oriol
as
Melina Matthews
as
Peter Vives
as
Àgata Roca
as
David Selvas
as
Mercè Martínez
as Bet
Frederico Barata
as Joao
David Janer
as Oriol
Zoe Gatell
as Anna
Arnau Gol-Karsunke
as Rafa
Lluís Altés
as Jefe Científica
Tana González
as Jefe de Seguridad Diskin
Víctor Benjumea
as Recepcionista
Annabel Castan
as Abogada Rebeca
Seasons
Episodes
Season 1
Episode 1
After years in isolation, Ulises returns to Barcelona when his former partner asks for help decrypting Pandora, the code behind a revolutionary technology. The reunion ends in murder, turning Ulises into the main suspect. As a video of his escape goes viral, tech mogul Damián Diskin prepares to launch Day One, and Ulises realizes that nothing - not even his friend's death - is what it seems.
Episode 2
With no trace of Pandora, Ulises turns to Paula, who shows him another video revealing the killer. The only person who can clear him is Rebeca, whose social media activity puts her in Diskin's sights. Determined to protect the launch of Day One, Diskin intervenes through the technology itself, erasing evidence and sending a mercenary to silence all witnesses.
Episode 3
Ulises goes into hiding with Rebeca, the only witness who can prove his innocence. Together they discover where Pandora may be hidden, but Rebeca secretly activates the technology, exposing their location. Diskin sends his mercenary to close all loose ends. As violence erupts, Ulises loses everything and is forced to run once again.
Episode 4
Rebeca is questioned by the police while Ulises becomes the prime suspect in another murder. When they reunite, they finally access Pandora and uncover its true nature. Unaware that she is being controlled through the contact lenses, Rebeca exposes their location. Biran heads toward their location, as both the police and Diskin close in.
Episode 5
Ulises and Rebeca go to the Synchrotron. They need the power of the accelerator to obtain definitive proof that could stop 'Day One'. When they activate the contact lenses to infiltrate the facility, Diskin tracks them. A chase erupts inside the accelerator. Separated and cornered, Ulises escapes outside, where he comes face to face with Inspector Moreno, who aims... and fires.
Episode 6
Ulises and Rebeca are taken to Diskin's headquarters under the threat of Inspector Moreno. Meanwhile, Beth considers betraying the magnate and seeks Salvador's help. Diskin reveals the true purpose of the lenses and asks Ulises for his collaboration. As the global launch begins, evidence of the technology's danger breaks into the live broadcast, exposing the truth.
Where does Day One rank today?
Day One is #2943 on the CineFlixo Daily Streaming Charts today.
- Highest: #2943
- Top 10: 0 days
- Top 100: 0 days
Watch Day One Online Free — All Episodes in HD
Stream Day One online free in HD on CineFlixo. A popular drama and mystery series originally produced in Español and released in 2026, it's earned a solid 6.5/10 from 16 viewers worldwide.
About Day One
“The future is offline. Your survival starts now.”
Barcelona, 2026. During Mobile World Congress week, Ulises Albet, a former tech prodigy turned anti-tech activist, becomes the prime suspect in a murder. As he escapes through a city under lockdown, he uncovers the imminent launch of a groundbreaking technology that could put humanity's ethical future at risk. To stop it, he must confront his past. Across 1 season and 6 episodes, originally airing on Prime Video.
Day One Cast and Characters
The cast features Álex González (as Ulises Albet), Asier Etxeandia (as Samuel Barrera), Alba Planas (as Rebeca), Jordi Mollà (as Diskin), and Renata Notni. Their performances are a major reason Day One has built such a passionate audience.
Where to Watch Day One Online
On CineFlixo you can watch Day One free — no account, no credit card, no ads in the middle of the show. We stream the full series in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.
▶ Watch Day One NowWhy People Are Watching Day One
Day One flies under the radar but it deserves your attention. What makes it work is emotional weight that hits where it counts and tight pacing that earns its twists. If you enjoy Español storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.
Frequently Asked Questions about Day One
Where can I watch Day One online for free?
You can watch Day One online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How many episodes does Day One have?
Day One has 6 episodes across 1 season. All episodes are available to stream right here on CineFlixo.
Is Day One good? What's the rating?
Day One holds a 6.5/10 rating based on 16 reviews — a solid pick if the genre interests you.
Who is in the cast of Day One?
The main cast includes Álex González, Asier Etxeandia, Alba Planas, and Jordi Mollà, plus a strong supporting ensemble.
Is Day One available in Español?
Yes — Day One was originally produced in Español and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Day One released?
Day One first aired in 2026.
Do I need an account to watch Day One on CineFlixo?
No. CineFlixo is free and you can watch Day One without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Series You Might Like
If you enjoyed Day One, check out Pride, The Amazing Mrs Pritchard, Strange Days at Blake Holsey High, Bugs, and Planet of the Apes.
Frequently Asked Questions
Where can I watch Day One for free?
You can watch Day One online for free on CineFlixo. All 6 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.
How many seasons and episodes does Day One have?
Day One currently has 1 season and a total of 6 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.
What is Day One about?
Barcelona, 2026. During Mobile World Congress week, Ulises Albet, a former tech prodigy turned anti-tech activist, becomes the prime suspect in a murder. As he escapes through a city under lockdown, he uncovers the imminent launch of a groundbreaking technology that could put humanity's ethical future at risk. To st… It belongs to the Drama, Mystery genres.
In which language is Day One originally available?
Day One was originally produced in ES. On CineFlixo the show is available in its original ES audio. Check the player options on the watch page for available subtitle tracks.
When was Day One first released?
Day One first premiered on March 13, 2026 (2026). The series has since concluded its run.
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