It is a time of darkness! It's not a good time to be here. A Skeleton Army is attacking Ninjago. There's a rumor that Lord Garmadon has returned, but that's impossible. He's only a legend; a dark and terrible legend told to scare little children who misbehave. / But what if he's real? What if he's returned? Legend says, long ago before time had a name, Lord Garmadon tried to destroy Ninjago; to break it apart with the Power of Destruction. But before he could, his brother Wu, a Spinjitzu Master saved us all by banishing Garmadon to the Underworld. / As I said, it is just a legend. But still, the Skeleton Army is real, so where is the Spinjitzu Master. Who will save us now? (Source: Cartoon Network)