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First Signal poster featuring two heroes above a futuristic city

Original serialized anime

Sci-fi mystery · Cosmic action anime

First Signal

Every memory has a cost.

A signal tears through Aethon City, pulling Kael Mercer and his circle into a conflict bigger than their world.

Sci-fiCosmic actionOriginal world

Episode library

First Signal
episodes.

New releases arrive every Sunday. Two connected parts combine to make one complete episode. Sign in to check your Free Profile or Studio Pass access.

Episodes are being prepared. Explore other shows

The series

What you're
watching.

A mysterious signal tears through Aethon City and pulls Kael Mercer, Syla Mercer, Astra Vale, Morrow Vey, and Eren Hollow into a conflict tied to memory, identity, and survival. As the signal reveals what their world has hidden, every answer creates a more dangerous question.

01Futuristic city mystery
02Cosmic powers and combat
03Character-driven secrets

Aethon transmission

SIGNAL:// INCOMING

First Signal

The live signal clock is counting down to the synchronized Sunday premiere.

--Days
--Hours
--Minutes
--Seconds

Story guide

The story,
season by season.

Open any season for a quick, spoiler-light explanation of that chapter. Confirmed season titles are shown when the story has one.

01
Season 1The Hum

A 17-second global event awakens the Resonance and pulls Kael Mercer, Astra Vale, Morrow Vey, and Eren Hollow toward the Nacre and the Dreamers. The first mystery ends with a warning: Earth is not humanity’s enemy.

02
Season 2The Drift

The Signal’s effects spread beyond Aethon City. The group follows a changing trail of memories, emotions, and Dreamer contact while the world begins drifting away from everything it once understood.

03
Season 3Choir of the Quiet Sky

More voices emerge inside the Resonance, turning one mystery into a chorus. Competing interpretations divide the people trying to understand whether the Signal is a warning, an invitation, or both.

04
Season 4The Living Earth

Earth’s changing systems reveal that the planet is connected to the Signal in ways no one expected. Survival now depends on listening to a world that may be more aware than humanity believed.

05
Season 5The Eleven Minutes

A longer disturbance breaks the team’s sense of time and raises the stakes of every Signal event. What happens during those eleven minutes changes how the Dreamers and humanity see one another.

06
Season 6The Silence of Earth

The world falls frighteningly quiet as old lines of communication fail. Morrow experiences his first major emotional overload, carrying more of humanity’s fear and grief than one person can hold.

07
Season 7The Night of Misrecognition

Resonance distorts identity, memory, and trust. The team must decide what makes a person real when familiar faces, loyalties, and even recognition itself can no longer be trusted.

08
Season 8The Earthless Generation

A generation faces life after Earth’s departure from the world they knew. As Morrow hears humanity grieving that loss, the emotional cost of the Signal becomes impossible for him to escape.

09
Season 9The Resonance War

Factions stop arguing over what the Resonance means and begin fighting to control it. The conflict forces Kael’s circle to protect people without letting the Signal become another weapon.

10
Season 10The Eye Below

A hidden presence beneath the known conflict brings the team closer to the truth. Morrow reaches his breaking point as the Void Listener—not as a villain, but as someone overwhelmed by everything he can feel.

11
Season 11The Twin Resonance

A second Resonance reveals that the Signal belongs to a much larger connected universe. The discovery changes the scale of the mission and challenges every assumption about humanity’s place in it.

12
Season 12The Blue Afterlight

In flooded Aethon City, the survivors rebuild beneath the blue afterlight. Morrow’s redemption begins quietly through a family reunion that reminds him human emotion can heal as powerfully as it hurts.

13
Season 13The Children Below the Sea

A younger generation inherits a flooded world and the consequences of the Signal. In the finale, Morrow’s daughter reaches him and restores the part of himself he thought was gone.

14
Season 14The Third Dreamer

The arrival of a third Dreamer changes the balance between humanity and the beings behind the Signal. Old answers are reopened as the team learns the Dreamers were never a single united voice.

15
Season 15The Children’s War

The next generation is pulled into a conflict it did not create. Their choices challenge the older survivors to end the cycle instead of handing another war to their children.

16
Season 16The Last Human Era

Humanity confronts the end of its familiar age and must decide what deserves to survive into the next one. The final truth about the Signal begins to come into view.

17
Season 17The Blue End

The long journey reaches its final transition as humanity faces the blue end of the world it knew. Morrow stands as an emotional guardian while Kael and the others prepare to close the Signal’s loop.

18
Final SeasonThe First Signal

The story returns to its beginning and reveals that humanity created the Signal across time. The final chapter closes the loop between the people who first heard it and the future that sent it back.

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