Season 2 Episode 3

When a group of young boys accidentally stumble onto Gisborne's weapon-testing site, all but one of them is taken prisoner. The resourceful escapee, Daniel, eludes Gisborne's men and alerts Robin to the discovery. Robin is horrified to find that Gisborne has developed an indestructible new suit of armour made of Damascus steel, since an army with this new protection would easily defeat King Richard. Meanwhile, Gisborne has taken the boys back to Locksley Manor where they will be hanged. Luckily, Robin and his gang arrive in time to save the boys and steal the impressive black diamond, used to create the Damascus steel. However, disaster strikes when Daniel is captured. The Sheriff immediately demands an exchange - Robin can have Daniel in return for the black diamond. Robin and the gang agree to the exchange and, when completed, they intend to torch Locksley and melt the black diamond. Marian learns of Daniel's capture and puts a plan into action. Feigning interest in seeing Gisborne, she requests a night pass from the Sheriff. She doctors the document so that the signature can be mistaken as a release for Daniel. Marian runs her plan past Robin as she needs one of the Outlaws to pose as a guard to take Daniel. To everyone's surprise Allan volunteers, but he only sees it as a brilliant opportunity to leak Robin's plan to Gisborne. Gisborne arms himself with his indestructible suit of armour, making a rescue attempt virtually impossible. Robin must think fast to save the boy's life and stop a vital part of the Sheriff's war machine.