The Marine Plant, a subsea seaweed cultivation company, asks the Alfa Agency for help in identifying robots deprived of the first law of robotics, that could damage the workers who work in the deep sea floor. Nathan, Jack O'Ryan and Sigmund are sent to the Sea One station to investigate, but they suspect that algae cultivation is a cover for drug trafficking. Martin Douglas, of the Marine Plant, discovers the true intentions of the agents and prepares a sabotage ...
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