The Travels of the Young Marco Polo Episode 4 Knights of the Green Clover Episode Title:Knights of the Green Clover.Episode Description: Marco Polo becomes a squire. Because their ship is not allowed to leave the port of Acre, he and his friends want to continue to follow Marco's father's diary route on horseback. But only the crusaders in the castle have horses. So the three join their order. And don't come out! If they try to escape, they are threatened with imprisonment. But when Shi La's healing art with needles relieves the back-suffering grandmaster, the onward journey is secured