What we know
A Son (2026)
It shares its release window with Obsession, so expect the two fanbases to be reacting side by side.
It hits the big screen on May 15, 2026.
Reactr / Trailer Reactions / A Son
New here? Reactr is the free trailer reaction maker for creators: watch the trailer below, record your reaction on camera or voice only, and post the clip to your own channel. Studios and brands start here.
In Theaters · May 15, 2026
A Son
Trailer Reactions
Scored from what 8 creators said on camera while watching the trailer, out loud, in their own YouTube reaction videos. A proprietary Reactr score. How the score works
Drama
Maria, an inexperienced school psychologist, senses that behind the apparent happiness of an eight-year-old boy, who has just arrived at the school, lies a secret, the consequences of which are unpredictable. If she is to find out, she will have to decipher what Guille’s mind translates into drawings, as well as overcoming his father’s intransigence.
Free · no editing · camera or voice only · the clip is yours to post
The Trailer
The A Son trailer, ready when you are
Dropped March 3, 2026
71This trailer, scored from 6 reaction videos
Creator Reactions
What creators said about the A Son trailer
Creators posted 8 reaction videos to YouTube watching this trailer. Reactr scored what they actually said, out loud, on camera, and combined it into the Reactr Rating shown at the top of this page. All of the videos are below. How the score works.
Every reaction above is a creator's own upload on YouTube, credited to their channel. Reaction videos are found automatically; a creator can claim their page or ask for a video to be removed from the creator directory.
Reactr Verdict
Did A Son deliver on its trailer?
59The trailer
8 reaction videos scored. See them all
8 reaction videos scored. See them all
?The film itself
scored from reactions posted after release
scored from reactions posted after release
Verdict comingafter opening weekend
After release, creators post a second kind of video, their reaction to the film itself. Reactr scores those the same way it scored the trailer reactions and puts the two numbers side by side to answer one question: did the movie live up to its trailer?
The people behind it
The history behind A Son
Capitán Araña, Guion Alto and Veleta Films AIE are behind the production. Direction comes from Nacho La Casa, with writing credits for Juan Apolo. Runtime is listed at 1 hour 35 minutes.
The lineup
Who you’ll see in the trailer
On screen, it is Macarena García, Ian Cortegoso and Hugo Silva carrying the story. Macarena García plays María.
Macarena García
as María
Ian Cortegoso
as Guille
Hugo Silva
as Manuel
Jesús Carroza
as Roberto
Javier Aguayo
as Paco
Chema del Barco
as Emilio
Silvia Larrauri
as Secretaria
Daniel Mantero
as Fernando
Why react to this one
This trailer was made to be reacted to
Not every reaction is a yell. Sometimes the camera catches you leaning in, and that says more.
Every theatrical release wants the same thing: a real reaction before the reviews show up. Yours can be first.
Reactions on Reactr
Be one of the first to react
Reaction clips for A Son will appear here as Reactors share them. The Reactr recorder is free for creators: watch the trailer, record on camera or voice only, and the finished clip is yours to post on your own TikTok, Reels, or Shorts channel.
Record the first reaction →FAQ
A Son: quick answers
How do I make my own A Son reaction video?
Open the reaction recorder on your phone at reactr.film/studio/a-son, choose camera or voice only, and press record while the trailer plays. Reactr captures your reaction and gives you a share-ready clip when the trailer ends. It is free.
Do I have to be on camera?
No. Voice Reaction mode records your commentary with the microphone only: the camera stays off, no face is recorded, and you still get a share-ready clip for your channel.
When does A Son come out?
A Son is scheduled to open in US theaters on May 15, 2026. Dates can shift, so check back for updates.
Who stars in A Son?
Macarena García, Ian Cortegoso, Hugo Silva, Jesús Carroza and Javier Aguayo lead the cast, directed by Nacho La Casa.
Is Reactr free?
Yes. Recording reaction clips on Reactr is free, with no paywall on the finished clip. You own your clip and can post it to TikTok, Reels, Shorts, or anywhere else. Reactr makes money from studios and sponsors, not from creators.
More trailers this season
Keep reacting
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May 15, 2026
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May 29, 2026
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June 12, 2026
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June 5, 2026
The Mandalorian and Grogu
May 22, 2026
The Punisher: One Last Kill
May 12, 2026
Your first reaction only happens once
Watch the A Son trailer, hit record on camera or voice only, and the clip is yours to post.
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