Children of Omega Arc

The Children of Omega is one of the story arcs of the series.
== Synopsis ==
A year after the loss of Master Wu, the Ninja, led by the newly dubbed Master Adam, must protect the Royal Family from Japan and prevent a group known as the Children of Omega from successfully summoning at the Temple using the Oni Masks.
Adam is the main protagonist and Harumi is the main antagonist. 
The Sons of Garmadon serve as the villainous faction. 
It focuses on Lloyd attempting to stop the Children of Omega from summoning Omega, the God of All Oni, and introduces the Oni into the lore.
The collectible item for this season is the Oni Masks.