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Hunt Cross has an unusual speciality – a researcher of the Department of Hour. He is given a task: he has to find a Newfoundland dog, which was lost in the past. Hunt is sent on a search, which begins with an expedition to America, passing through meetings with the artist Landsir and the poet Byron, Napoleon's defeat and the gush of the Battle of Trafalgar up to the collapse of «Titanic» and.... Where is the dog? What fate awaits this dog?