Children of Memory

Children of Memory is a science fiction novel by British author Adrian Tchaikovsky, the third entry in his Children of Time series. Informed by his academic background is in zoology and psychology, Tchaikovsky continues the series’ exploration of non-human intelligence, evolution, and consciousness. The story follows the multi-species crew of the starship Skipper as they travel to the planet Imir, a long-lost remnant of humanity’s terraforming efforts. Expecting to find a thriving colony descended from the lost ark ship Enkidu, they instead discover a primitive, agrarian society on the brink of collapse and a mysterious, indecipherable alien signal. The crew launches a covert mission to understand what became of the original colonists, but their investigation uncovers a deep and reality-bending secret buried on the planet.

The novel uses this premise to delve into complex philosophical questions, examining themes of The Nature of Consciousness, The Ethics of Covert Intervention, and Narrative Control Over History. As the crew attempts to observe the struggling human colony without interfering, they are forced to confront the moral consequences of their presence and the impossibility of passive observation. Through the colonists’ fragmented history and the crew’s attempts to understand it, Tchaikovsky explores how civilizations use narrative to impose order on tragedy and how those stories can break down under pressure. The result is a work of speculative fiction that moves beyond traditional space opera to question the foundations of history and identity.

Content Warning: The source text and this guide contain descriptions of graphic violence, illness or death, and emotional abuse.

Plot Summary

A Human-Portiid vessel, the Skipper, arrives in the star system of a world designated Imir, once the target of humanity’s ancient terraforming attempts. The crew detects two signals: one from a small human colony and a second, inexplicably alien one. The crew consists of Miranda, an Interlocutor (a Nodan microbial entity inhabiting a cloned human body to experience the universe); the Portiid spiders Bianca, Portia, and Fabian; the Octopus Paul; a Human named Jodry; two uplifted Corvids, Gothi and Gethli; and an instance of the artificial intelligence construct of the deceased human scientist, Avrana Kern. 

The narrative also follows Liff, a young girl living in the human colony, Landfall. Liff’s world is later revealed to be a simulation running within a vast, alien engine buried on Imir. In reality, the first colonial shuttle, the Urshanabi, crashed centuries ago, killing all aboard, including its captain, Heorest Holt. The engine recorded the crash and began simulating the colony’s history as if the landing had been successful. Liff lives in the final, dying generations of this simulated history, where the colony’s limited ecosystem is collapsing. Plagued by contradictory memories—of her parents being both alive and dead, of knowing her “grandfather” Heorest Holt who should be centuries gone—Liff believes a “Witch” in the nearby hills holds the key to the strangeness afflicting her world.

To investigate the colony, Miranda undertakes a solo infiltration mission. When her consciousness is copied into a human body and sent to the planet, the alien engine intercepts and absorbs her, inserting her into its simulation. This act disrupts her consciousness: While she believes she is Miranda Lain, a new schoolteacher in Landfall, her crewmates Fabian, Portia, and Paul are also manifested in the simulation as separate individuals, each an unwitting fragment of Miranda’s own consciousness. As Miranda befriends Liff, the colony deteriorates. Crop failures lead to famine and social unrest, empowering a xenophobic militia led by Liff’s uncle, Molder, who scapegoats outsiders. Liff, seeking answers for her fractured reality and the colony’s decay, repeatedly attempts to visit the Witch in the hills. The Witch is the simulation’s manifestation of Avrana Kern, who, along with copies of Gothi and Gethli, was sent into the engine by the real Skipper crew on a mission to rescue the trapped Miranda. Simulated-Kern is trying to gather the fragmented pieces of Miranda so they can escape, but her direct actions cause the simulation’s physics to break down, manifesting as storms and other phenomena.

The real crew of the Skipper, now part of a larger fleet that has gathered to study the engine, monitors the simulation. They watch as their rescue team struggles, unable to simply pull Miranda out without causing a catastrophic collapse of the data that constitutes her. Inside the simulation, the Corvids, Gothi and Gethli, realize that Liff is a focal point of the simulation’s logic, a “constant” whom the engine uses to try and resolve the paradoxes Miranda’s presence has created. They appear to Liff in dreams, acting as familiar spirits for the Witch and feeding her information about other worlds and the true nature of her reality, making her an unwilling participant in their plan. As Landfall’s society breaks down completely, Uncle Molder’s militia identifies Miranda and her friends as the cause of the colony’s ills. Liff, manipulated by both her own fragmented memories and the Corvids, inadvertently points out Miranda to her uncle, leading to the group’s capture and their execution by the mob.

The climax occurs in the simulated Landfall. Miranda, Fabian, Paul, and Portia are on a scaffold, about to be hanged by the militia. As the execution begins, their non-human natures are revealed in grotesque fashion: Paul’s Octopus physiology allows him to slip free from the noose, and Miranda’s Nodan form begins to break down. Liff, horrified, flees to the hills and convinces Kern to intervene. Kern arrives in the town square, unleashing her own power and bringing the simulation to a chaotic standstill. This disruption allows the Corvids, augmented by Liff’s unique status as a narrative anchor, to fully analyze the simulation’s structure. Liff helps them piece together the true, cyclical history of Landfall and isolate the “pieces that don’t belong” (390), meaning the fragments of Miranda’s consciousness. With the anomaly identified, the real Skipper crew successfully extracts Miranda from the engine. The simulation resets, cleansed of her influence, and Liff is left alone in the final, desolate end-loop of her world.

Upon her recovery, Miranda is reintegrated with the copy of herself that remained on the Skipper. She is deeply traumatized, believing the colony of Landfall was a real place that has now died. To protect her fragile psychological state, the crew conceals the truth: that Landfall never existed at all. Resentful of being similarly sequestered, the splinter-Kern who led the rescue conspires with Miranda and they take a shuttle to the surface of Imir. There, Miranda finds no ruins, no town, no farms, only a barren landscape and the buried crash site of the Urshanabi. The greater Kern finally reveals the full truth: The colonists died on impact, and the world she lived in was a simulated scenario run by the ancient machine. Devastated but understanding, Miranda finds a new purpose. She argues to the fleet that the simulated colonists, particularly Liff, are conscious beings deserving of rescue.

After gaining the fleet’s approval, Miranda and the splinter-Kern re-enter the simulation with administrative control. They find Liff in the final, starving moments of the colony’s repeating history. Miranda offers Liff a chance at a real life and Liff accepts. The book ends with a now-real, older Liff preparing to leave Imir on a new ship with Miranda to explore the galaxy. Before they depart, they enter the simulation one last time. Liff reaches out to the emergent, godlike consciousness of the simulation itself—the “Wolf” she always sensed—to show the lonely, dreaming machine that there is a wider universe beyond its own imaginings.