Ryan Cawdor and his companions must navigate a treacherous post-apocalyptic landscape where time itself is a weapon and the secrets of temporal gateways threaten to unleash future horrors. Escaping a fortified aircraft carrier, they find themselves on Royal Island, a harsh territory controlled by rival barons who hoard vital resources. Ryan seeks honest trade but is instead drawn into a desperate struggle to prevent the island's temporal gateways from becoming a conduit for existential threats.

The premise of 'Time Castaways' suggests a high-octane narrative driven by survival in a harsh, time-warped environment. The focus on Ryan Cawdor and his group implies a continuation of established character dynamics and world-building within the Deathlands series. The introduction of temporal gateways and warring barons points to complex plot developments and escalating stakes. The narrative is likely to emphasize action, resource management, and the ethical dilemmas of wielding powerful, potentially world-altering technology.