Episode Title:Child's Play.Episode Description:Lord Garmadon arrives at the museum planning to revive the extinct Grundle to hunt the Ninja. The Ninja interrupt his plan, but are affected by the power of the Mega Weapon and turned into kids. Moreover, the Ninja realize the Grundle must have been revived after all and escape the museum. The Ninja call Lloyd to meet them and inform him of the situation. Lloyd calls Master Wu and Nya back at the Destiny's Bounty, telling them what happened. Then, the Grundle shows up and is about to consume the Ninja, when Master Wu and Nya arrive with some Tomorrow's Tea, tossing it to them. Lloyd uses the tea to defeat the Grundle, but while the Ninja are returned to normal, he has aged as well.