Seventeen-year-old Marco Polo leaves his home in Venice on a trip to the little-known country of "Yuan", in the company of his father Nicolo and his uncle Matteo. Their mission is to deliver the sacred oil from the Tomb of Christ and a letter from the Pope to the Kublai.

This was an animated documentary on Marco Polo, mixed in with live-action footage. 43 episodes were broadcast on NHK from 1979 to 1980, but only the first and last episodes survive. While the cel animation was shot on film, post-production and editing were done on videotapes (normal for NHK programs), which have since been wiped. In 2021, NHK announced that they had successfully collected recordings of all 43 episodes from viewers and individuals involved with the show. NHK began a complete re-broadcast of the show on April 5, 2025.