Shuriken Sentai Ninninger

Decades ago, a group of demons named the Yokai Army Corps attempted to rule the world. They were stopped by a man known as the Last Ninja, who used the power of 48 different shuriken seals to trap them.

Two generations later, the seals holding them were broken, and the demons have escaped their imprisonment to once again attempt to rule the world, using the additional power of some of the broken seals they now hold. Many more of the seals are missing, having been scattered over the land.

The remaining seals lie in the hands of five cousins, all grandchildren of the Last Ninja. Using their Shuriken Ninpo, along with advice from their grandfather and training from his son, they transform into Shuriken Sentai Ninninger, and battle the Yokai Army Corps in modern times.