The documentary will focus on the Lewis chessman pieces, including their history and importance. It will provide details on where the chess pieces originated and were found. The filmmakers plan to interview experts about the age of the chess pieces, their value, significance, and other uses in media like Harry Potter. They will use replicas of the chess pieces during interviews and incorporate footage of people playing chess. The library is identified as the most interesting location to record footage due to its old artifacts and books.