The film follows Tintin (voiced by Jamie Bell), a young reporter who teams up with Captain Archibald Haddock (voiced by Andy Serkis), a retired sailor, to solve the mystery of the Unicorn, a ship that Tintin's uncle had been searching for before his disappearance. Along with Snowy, they embark on a thrilling adventure to uncover the secrets of the Unicorn and face off against the villainous Sakharine (voiced by Daniel Craig).