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Day One
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COLLECTION · Series · 2026

Day One

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.

Source: TMDB
* 6.5 (16)DramaMysterySpain
Countries
Spain
Studios
Prime Video · Zebra Producciones · NewCo Audiovisual · Documentales en Canarias · Mobile World Capital Barcelona Foundation · 3Cat
Release
13/03/2026
Score
6.5 / 10 (16)
Where to watch
Streaming
Amazon Prime VideoAmazon Prime VideoAmazon Prime Video with AdsAmazon Prime Video with Ads
Seasons and episodes
Season 1
Season 1
6 episodes · 2026
Episode 1
Episode 1. Episode 1
2026-03-13 · 46 min

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…

Episode 2
Episode 2. Episode 2
2026-03-13 · 43 min

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…

Episode 3
Episode 3. Episode 3
2026-03-13 · 45 min

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…

Episode 4
Episode 4. Episode 4
2026-03-13 · 41 min

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,…

Episode 5
Episode 5. Episode 5
2026-03-13 · 42 min

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…

Episode 6
Episode 6. Episode 6
2026-03-13 · 42 min

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…

Cast by season
Álex González
Álex González
Ulises Albet
Asier Etxeandia
Asier Etxeandia
Samuel Barrera
?
Alba Planas
Rebeca
Jordi Mollà
Jordi Mollà
Diskin
Renata Notni
Renata Notni
Ivan Massagué
Ivan Massagué
Mireia Oriol
Mireia Oriol
Melina Matthews
Melina Matthews
Peter Vives
Peter Vives
Àgata Roca
Àgata Roca
David Selvas
David Selvas
Mercè Martínez
Mercè Martínez
Bet
Frederico Barata
Frederico Barata
Joao
David Janer
David Janer
Oriol
?
Zoe Gatell
Anna
?
Arnau Gol-Karsunke
Rafa
Lluís Altés
Lluís Altés
Jefe Científica
?
Tana González
Jefe de Seguridad Diskin
Víctor Benjumea
Víctor Benjumea
Recepcionista
?
Annabel Castan
Abogada Rebeca
Alex Ricart
Alex Ricart
Trabajador BSC
?
Christian J.C.
Agente Corrupto
?
Òscar Muñoz
Tirso Planell
?
Adrià Rosell
Volunteer
Comments

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User reviews
M
MovieGuys
★ 7.0 / 10
"Day One" does a few things moderately well but remains a rather formulaic sci-fi crime thriller. If you were expecting anything novel or thought-provoking, you won't find much on offer from this Spanish series. It's a very mild cautionary tale about the risks associated with AI and big tech, but this is, at its core, a crime thriller. Predictably there's the usual woke content and a warning about how social media needs policing, even, no doubt, if that means taking away people's right to privacy, as we are seeing in Australia. Acting in this series is solid; no complaints there, and it's well paced and rarely dull. In summary, a serviceable sci-fi thriller from Spain. Worth a look.
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