A mythical Scottish warlord and his sons must withstand a massive castle siege launched by the ruthless commander of an invading army. A mythical Scottish warlord and his sons must withstand a massive castle siege launched by the ruthless commander of an invading army. A mythical Scottish warlord and his sons must withstand a massive castle siege launched by the ruthless commander of an invading army. A mythical Scottish warlord and his sons must withstand a massive castle siege launched by the ruthless commander of an invading army.