Episode Title:The Mask of Deception.Episode Description:A year has passed since Master Wu was lost in time and the ninja are spread across Ninjago but regroup when a powerful relic is stolen by a group of masked criminals called the Sons of Garmadon. Lloyd finds that the group has something to do with his father, Lord Garmadon. Learning about the importance of the stolen 'Oni Mask' they are asked to protect the Royal Family and their Oni Mask from the Sons of Garmadon.