|Mountain of Madness|
|Location||Lord Garmadon's Dimension|
|Inhabitants||Craglings, Mud Monsters|
Lord Garmadon immediately attacked his brother, revealing that his time in the dark realm has given him four arms and the power to safely wield all four Golden Weapons. Lord Garmadon nearly defeated Sensei Wu by summoning Mud Monsters to smother him, but Sensei Wu managed to deliver the news of Lloyd's plight moments before he was swallowed by the mud. Upon learning that his son was in trouble, Lord Garmadon saved Sensei Wu and offered his assistance.
Since Sensei Wu had used all of his Traveler's Tea to reach Lord Garmadon's dimension, the brothers set off for the Mountain of Madness, where they could find a portal that would take them back to Ninjago. Along the way, they had to fend off a Cragling attack with their Spinjitzu. When they reached the portal, Lord Garmadon claimed that he had only been using Sensei Wu to return to Ninjago, but the brothers nonetheless used it to return to their native realm before regrouping with the Ninja at Destiny's Bounty.