This subtheme is based on Ninjago Season 10, March of the Oni and is the third part of the Oni Trilogy. This was the first and only season not to have a full set wave accompany the season. The Ninjago Accessory set was the only set made for season ten, and, it is a minifigure pack, not a full set.
LEGO Ninjago, also known as Ninjago: Masters of Spinjitzu, theme was introduced in 2011 and included sets that are based off of original storylines, a TV series and The LEGO Ninjago Movie, a movie based on the theme. The main premise of the Ninjago universe is based around six teenage Ninja, Kai, Jay, Cole, Zane, Nya, and Lloyd, who have been trained by their master Sensei Wu, fighting forces of evil to protect the land of Ninjago.