In Brussels of the 1930th years Tintin – the young reporter who became famous for the independent investigations worked. Somehow time Tintin attention was drawn by the model which was on sale in the market Unicorn bark, and the reporter bought it. For some reason this act drew attention at once of two people, each of which wanted to buy "Unicorn". One of them Warned Tintin about danger: it appears, in the model the mysterious key for which buyers hunt is hidden.
Business all that the real ship "Unicorn" tranSported valuable freight and it was attacked by pirates so now the only help about where it is necessary to look for this freight, is stored in the model. From this point in Tintin's life the real Adventures begin: its apartment is searched and when Tintin learns that to do to him to reveal a secret of the model, for him in a pursuit assistants to the Russian villain are let. And even agents of the Interpol are powerless before so powerful enemy.