S01E05 — Ultimate Sword

Ivanhoe robs King John's mint to help raise King Richard's ransom, which is being collected by Lord Sirus. Rebecca & Odo take the money to Sirus in York, while Ivanhoe goes to see Fingal, who instructs him on how to find the Ultimate Sword, a weapon with the magical power to tear the fabric of space and time. However, Mordour is also on its trail, and gets there first, using it to travel to Rotherwood Castle in the time of Ivanhoe's infancy in order to kill him - Ivanhoe follows him and tries to thwart his intentions.