Thorgal: Tupilaqs (Thorgal #32)

Thorgal had a chance to destroy the Atlantean spaceship and its weapons, but couldn't bring himself to do it, as it also would have meant sacrificing Jolan. His aborted attempts, however, activated Neokora, the onboard AI. First contact was immediately hostile, and the two Vikings were soon forced to flee - both the machine, as well as the last survivors of the crew, long thought dead but now awakening. Including Slive the Sorceress, Thorgal's one-time ally, turned enemy...