Eight years haunted by his wife’s disappearance, evolutionary zoologist Professor Nick Cutter finds himself facing a terrifying new reality: rips in time and space – known as Anomalies – are unleashing creatures from across Earth's history into the present day. Assembled with him is an unlikely team: his loyal friend Stephen Hart, eager student Connor Temple, zookeeper Abby Maitland, hardened Special Forces Captain Tom Ryan, and government liaisons James Lester and Claudia Brown. Tasked by the Home Office to study these Anomalies, predict their appearances, and contain the creatures they unleash, the group soon finds themselves in a desperate race against time. But Cutter harbors a secret hope – a driving force beyond the official mission. As he investigates the Anomalies, fragments of evidence suggest his presumed-dead wife, Helen, might be alive, trapped somewhere within them. The team eventually confirms this shocking truth: Helen is indeed living in the past, profoundly altered by her experiences and research into the Anomalies, leaving everyone questioning her allegiances. A fragile alliance forms as Helen seemingly joins forces with the team to locate a dangerous Anomaly threatening to bridge past and future, battling a relentless predator stalking the present. However, Nick's desperate search alongside Helen in the past reveals a devastating truth: she was only interested in finding the Anomaly itself – and glimpsing the future. The mission takes a tragic turn when Captain Ryan is killed, forcing Nick’s return to the present. There, he discovers an even more unsettling consequence of their journey: Claudia Brown has vanished, erased entirely from existence by events in the past.